The maximum value for the weekly average price of a peach was $1.44. Given a mean of 1.08 and a standard deviation of .174, would this maximum value be considered an outlier? Explain.
The maximum value for the weekly average price of a peach was $1.44. Given a mean...
(1 point) a) A random sample of 13 cans of peach halves has a mean weight of 16 ounces and standard deviation of 0.4 ounces. Find a 90% confidence interval for a true standard deviation of the weights of all cans of peach halves. Confidence interval: b) What would be the confidence interval for a true standard deviation if the sample size was 45? Confidence interval:(
A study of peach trees showed that the average number of peaches per tree was 2000. The standard deviation of the population is 200. A scientist wishes to find the 99% confidence interval for the mean number of peaches per tree. How many trees does she need to sample to be accurate within 16 peaches per tree? a.) The winning team’s scores in 11 high school basketball games were recorded. If the sample mean is 10.5 points and the sample...
A study of peach trees found that the average number of peaches per tree was 625. The standard deviation of the population is 35 peaches per tree. A scientist wishes to find the 99% confidence interval for the mean number of peaches per tree. How many trees does she need to sample to obtain an average accurate to within 18 peaches per tree? 4 21 23 26
A study of peach trees found that the average number of peaches per tree was 525. The standard deviation of the population is 105 peaches per tree. A scientist wishes to find the 95% confidence interval for the mean number of peaches per tree. How many trees does she need to sample to obtain an average accurate to within 10 peaches per tree? Hint: Round n up the nearest whole number.
7. Suppose that the average weekly earnings for employees in general automotive repair shops is $450, and that the standard deviation for the weekly earnings for such employees is SSO. A sample of 100 such employees is selected at random. a) Find the mean and standard deviation of the sampling distribution of the average weekly earnings in the sample. (b) Find probability that the mean of the sample is less than $445. (e) Find the probability that the mean of...
average weekly earnings of bus drivers in a city are $1050 (that is μ) with a standard deviation of $54 (that is σ). Assume that we select a random sample of 81 bus drivers. a. Assume the number of bus drivers in the city is large compared to the sample size. Compute the standard error of the mean. b. What is the probability that the sample mean will be greater than $1080? c. If the population of bus drivers consisted...
8) The management at an environmental consulting firm claims the mean weekly salary is $275 with a standard deviation of $34.10. a) If management's claims are true, what is the probability that an individual worker would make an average weekly salary less than $264.50? b) If management's claims are true, what is the probability that a group of 40 workers would make an average weekly salary less than $264.50? 9) In a normal distribution, 1.25% of the area lies to...
Question 2 A sample has a mean Xbar = 35 and standard deviation of s= 10. Would a score of 40 be considered an outlier (extreme value) in this sample? Write an explanation of not more than 3 lines to support your answer
The mean monthly rent of students at Oxnard University is $970 with a standard deviation of $204. (a) John’s rent is $1,390. What is his standardized z-score?(c) How high would the rent have to be to qualify as an outlier? John’s rent would have to be $ or higher to be considered an outlier.
Question 5: The average weekly earnings of bus drivers in a city are $1050 (that is μ) with a standard deviation of $54 (that is σ). Assume that we select a random sample of 81 bus drivers. a. Assume the number of bus drivers in the city is large compared to the sample size. Compute the standard error of the mean. b. What is the probability that the sample mean will be greater than $1080? c. If the population of...