The percentage of girls who like pink in a school is 57%. What is the probability...
The percentage of girls who like pink in a school is 57%.
What is the probability that in a sample of 40 girls the number of girls who like pink is between 20 and 30, assuming the sampling distribution is normal?
Do not write probability in terms of percentage. Round your answer to two decimal places.
Homework Answers
Add Answer to:
The percentage of girls who like pink in a school is 57%.
What is the probability...
In a family with 3 children, the probability that all the children are girls is appoximately...
In a family with 3 children, the probability that all the children are girls is appoximately 0.125. In a random sample of 1000 families with 3 children, what is the approximate probability that 95 or fewer will have 3 girls? Approximate a binomial distribution with a normal distribution 囲Click the icon to view the area under the standard normal curve table. The probability that 95 or fewer families will have 3 girls is (Round to four decimal places as needed.)
Please explain how to Solve. Thank you 16. The following are interest rates (annual percentage rates)...
Please explain how to Solve. Thank you 16. The following are interest rates (annual percentage rates) for a 30-year-fixed-rate mortgage from a sample of lenders in a certain city. It is reasonable to assume that the population is approximately normal. 4.327, 4.461, 4.547, 4.813, 4.365, 4.772, 4.842. Find the upper bound of the 99% confidence interval for the mean rate. Round three decimal places. 4. A survey of high school students revealed that the number of soft drinks consumed per...
Answer all parts please An advertiser claims that the average percentage of brown M&M'S candies in...
Answer all parts please
An advertiser claims that the average percentage of brown M&M'S candies in a package of milk chocolate M&M'S is 12%. Suppose you randomly select a package of milk chocolate M&M'S that contains 57 candies and determine the proportion of brown candies in the package. (a) What is the approximate distribution of the sample proportion of brown candies in a package that contains 57 candies? The distribution is approximated by a normal distribution with mean 6.8 and...
The scores of students on the SAT college entrance examinations at a certain high school had...
The scores of students on the SAT college entrance examinations at a certain high school had a normal distribution with mean μ=553.3 and standard deviation σ=28.6.Round z-scores to 2 decimal places and give probabilities to 4 decimal places. (a) What is the probability that a single student randomly chosen from all those taking the test scores 558 or higher? ANSWER: For parts (b) through (d), consider a simple random sample (SRS) of 30 students who took the test. (b) What...
Researchers were interested in estimating the mean body mass index (BMI) for 5 year old girls in a very large school dis...
Researchers were interested in estimating the mean body mass index (BMI) for 5 year old girls in a very large school district in Oklahoma. A random sample of size 61 five year old girls was drawn, and the sample mean BMI was found to be 17.4. Although BMI measurements are typically a little right-skewed, because of the reasonably large sample size, the researchers felt it was reasonable to use procedures based on the normal distribution. Based on previous information, they...
Researchers were interested in estimating the mean body mass index (BMI) for 5 year old girls in a very large school dis...
Researchers were interested in estimating the mean body mass index (BMI) for 5 year old girls in a very large school district in Oklahoma. A random sample of size 70 five year old girls was drawn, and the sample mean BMI was found to be 17.4. Although BMI measurements are typically a little right-skewed, because of the reasonably large sample size, the researchers felt it was reasonable to use procedures based on the normal distribution. Based on previous information, they...
Question 8 (1 point) d In a certain high school, the probability that a student drops...
Question 8 (1 point) d In a certain high school, the probability that a student drops out is 0.09, and the probability that a dropout gets a high-school equivalency diploma (GED) is 0.27. What is Write only a number as your answer. Round to four decimal places (for example: 0.2711). Do not write as a percentage.
A sample of 57 research cotton samples resulted in a sample average percentage elongation of 8.16...
A sample of 57 research cotton samples resulted in a sample average percentage elongation of 8.16 and a sample standard deviation of 1.45. Calculate a 95% large-sample CI for the true average percentage elongation u. (Round your answers to three decimal places.) (7.775 7.775 x 8.545 What assumptions are you making about the distribution of percentage elongation? We assume the distribution of percentage elongation is normal with the value of o known. We make no assumptions about the distribution of...
The superintendent of a large school district, having once had a course in probability and statis...
The superintendent of a large school district, having once had a course in probability and statistics, believes that the number of teachers absent on any given day has a Poisson distribution with parameter u. Use the accompanying data on absences for 50 days to obtain a 95% large-sample CI for Number of absences 1 2 3 4 5 6 7 89 10 Frequency 23 8 10 976211 has approximately a standard normal distribution. No answers to two decimal places.) proceed...
A sample of 57 research cotton samples resulted in a sample average percentage elongation of 8.16 and a sample standard...
A sample of 57 research cotton samples resulted in a sample average percentage elongation of 8.16 and a sample standard deviation of 1.45. Calculate a 95% large-sample CI for the true average percentage elongation u. (Round your answers to three decimal places What assumptions are you making about the distribution of percentage elongation? We assume the distribution of percentage elongation is normal with the value of o known. We make no assumptions about the distribution of percentage elongation. We assume...
In a family with 3 children, the probability that all the children are girls is appoximately 0.125. In a random sample of 1000 families with 3 children, what is the approximate probability that 95 or fewer will have 3 girls? Approximate a binomial distribution with a normal distribution 囲Click the icon to view the area under the standard normal curve table. The probability that 95 or fewer families will have 3 girls is (Round to four decimal places as needed.)
Answer all parts please
An advertiser claims that the average percentage of brown M&M'S candies in a package of milk chocolate M&M'S is 12%. Suppose you randomly select a package of milk chocolate M&M'S that contains 57 candies and determine the proportion of brown candies in the package. (a) What is the approximate distribution of the sample proportion of brown candies in a package that contains 57 candies? The distribution is approximated by a normal distribution with mean 6.8 and...
Question 8 (1 point) d In a certain high school, the probability that a student drops out is 0.09, and the probability that a dropout gets a high-school equivalency diploma (GED) is 0.27. What is Write only a number as your answer. Round to four decimal places (for example: 0.2711). Do not write as a percentage.
A sample of 57 research cotton samples resulted in a sample average percentage elongation of 8.16 and a sample standard deviation of 1.45. Calculate a 95% large-sample CI for the true average percentage elongation u. (Round your answers to three decimal places.) (7.775 7.775 x 8.545 What assumptions are you making about the distribution of percentage elongation? We assume the distribution of percentage elongation is normal with the value of o known. We make no assumptions about the distribution of...
The superintendent of a large school district, having once had a course in probability and statistics, believes that the number of teachers absent on any given day has a Poisson distribution with parameter u. Use the accompanying data on absences for 50 days to obtain a 95% large-sample CI for Number of absences 1 2 3 4 5 6 7 89 10 Frequency 23 8 10 976211 has approximately a standard normal distribution. No answers to two decimal places.) proceed...
A sample of 57 research cotton samples resulted in a sample average percentage elongation of 8.16 and a sample standard deviation of 1.45. Calculate a 95% large-sample CI for the true average percentage elongation u. (Round your answers to three decimal places What assumptions are you making about the distribution of percentage elongation? We assume the distribution of percentage elongation is normal with the value of o known. We make no assumptions about the distribution of percentage elongation. We assume...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago