8 friends between the ages of 25-45 were asked how often they went to the gym...
8 friends between the ages of 25-45 were asked how often they went to the gym per week. The results were: 5,5,3,2,2,1,0,0. With a Confidence level of 90% what are the answers to the following:
What is the Confidence interval? Population mean? and standard deviation?
Homework Answers
Add Answer to:
8 friends between the ages of 25-45 were asked how often they
went to the gym...
In a survey, 25 people were asked how much they spent on their child's last birthday...
In a survey, 25 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $46 and standard deviation of $6. Construct a confidence interval at a 99% confidence level. Give your answers to one decimal place.
Question 2 (8 points) 25 Pittsburgh residents were asked how much sleep they get per night....
Question 2 (8 points) 25 Pittsburgh residents were asked how much sleep they get per night. The mean was 7.2 hours and the standard deviation was .78 hours. Construct and interpret 90% confidence interval for the true mean number of hours of sleep for Pittsburgh residents. BIU Format
1. In a study of speed dating, male subjects were asked to rate the attractiveness of their female dates, and a sample...
1. In a study of speed dating, male subjects were asked to rate the attractiveness of their female dates, and a sample of the results is listed below (1equals=not attractive; 10equals=extremely attractive). Construct a confidence interval using a 99% confidence level. What do the results tell about the mean attractiveness ratings of the population of all adult females? 6, 8, 1, 10, 7, 5, 8, 9, 7, 10, 3, 9 What is the confidence interval for the population mean muμ?...
I asked six (female) friends, co-workers, and family members how many times per week they wear...
I asked six (female) friends, co-workers, and family members how many times per week they wear their hair in a ponytail. I found the results interesting, since I myself seem to wear my hair in a ponytail more often than my friends do. The results were 1, 0, 1, 2, 1, 1. Calculate a 95% confidence interval for the population mean, place your answer below. Please walk me through this problem as simply as you can. Thanks!
In a survey, 21 people were asked how much they spent on their child's last birthday...
In a survey, 21 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $38 and standard deviation of $12. Construct a confidence interval at a 90% confidence level. Give your answers to one decimal place. It
In a survey, 16 people were asked how much they spent on their child's last birthday...
In a survey, 16 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $46 and standard deviation of $17. Construct a confidence interval at a 90% confidence level. Give your answers to one decimal place. ------------- ± ------------
17) In a survey, 26 people were asked how much they spent on their child's last...
17) In a survey, 26 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $32 and standard deviation of $14. Construct a confidence interval at a 90% confidence level. Give your answers to one decimal place. Enter the confidence interval in the form: Sample Mean ± Margin of Error You intend to estimate a population mean μμ with the following sample. 13 17 13 14 11 16...
In a survey, 15 people were asked how much they spent on their child's last birthday...
In a survey, 15 people were asked how much they spent on their child's last birthday gift. The results were roughly shaped as a normal curve with a mean of $45 and standard deviation of $15. Construct a confidence interval at a 98% confidence level. Give your answers to one decimal place. +
In a survey, 11 people were asked how much they spent on their child's last birthday...
In a survey, 11 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $44 and standard deviation (s) of $4. Construct a confidence interval at a 90% confidence level. give your answers to one decimal place. ____+-____
21. A gym has 2500 members. The ages of members have a normal distribution with mean...
21. A gym has 2500 members. The ages of members have a normal distribution with mean of 47 years and standard deviation of 12 years. How many members have ages between [23,71]? 22. The ages of members of a gym have a normal distribution with mean of 47 years and standard deviation of 12 years. The z - score of age of a gym member is 2.2. How old is this member? 23. About 45% of the population in a...
In a survey, 25 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $46 and standard deviation of $6. Construct a confidence interval at a 99% confidence level. Give your answers to one decimal place.
Question 2 (8 points) 25 Pittsburgh residents were asked how much sleep they get per night. The mean was 7.2 hours and the standard deviation was .78 hours. Construct and interpret 90% confidence interval for the true mean number of hours of sleep for Pittsburgh residents. BIU Format
In a survey, 21 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $38 and standard deviation of $12. Construct a confidence interval at a 90% confidence level. Give your answers to one decimal place. It
In a survey, 15 people were asked how much they spent on their child's last birthday gift. The results were roughly shaped as a normal curve with a mean of $45 and standard deviation of $15. Construct a confidence interval at a 98% confidence level. Give your answers to one decimal place. +
21. A gym has 2500 members. The ages of members have a normal distribution with mean of 47 years and standard deviation of 12 years. How many members have ages between [23,71]? 22. The ages of members of a gym have a normal distribution with mean of 47 years and standard deviation of 12 years. The z - score of age of a gym member is 2.2. How old is this member? 23. About 45% of the population in a...
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