) The mean of a chance sample with n=25 volume is X ̅=60. Since it is known that the standard deviation of the population is σ=12, find the confidence interval for the mean of the population with a probability of 95%. A) 55,296-64,704 B) 50,296-60,704 C) 59,296-61,704 D) 51,296-68,704 E) 53,296-66,704

) The mean of a chance sample with n=25 volume is X ̅=60. Since it is known that the standard deviation of the population is σ=12, find the confidence interval for the mean of the population with a probability of 95%. A) 55,296-64,704 B) 50,296-60,704 C) 59,296-61,704 D) 51,296-68,704 E) 53,296-66,704

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

3356)?545)))77
The diastolic BP in a certain population has a mean of 70 mm Hg and a standard deviation of 10 mm Hg. Suppose that a random sample of size 64 is taken from this population and the diastolic BP is measured. A) determine the sample mean and sample standard deviation of 64 measured values. B) find the probability that the mean diastolic blood pressure of 64 people in the sample is less than 73 mm Hg
A manufacturer of industrial solvent guarantees its customers that each drum of solvent they ship out contains at least 100 lbs of solvent. Suppose the amount of solvent in each drum is normally distributed with a mean of 101.8 pounds and a standard deviation of 3.57 pounds. a) What is the probability that a drum meets the guarantee? Give your answer to four decimal places. b) What would the standard deviation need to be so that the probability a drum meets the guarantee is 0.99? Give your answer to three decimal places.
The heights of women are normally distributed with a mean of 63.6 inches and a standard deviation of 2.5 inches. (show all work)a) If an individual woman is randomly selected, what is the probability that she has a height between 63 and 65 inches?b) If 100 women are randomly selected, find the probability that they have a mean height greater than 64 inches.c) If 75 women are randomly selected, find the probability that they have a mean height less than 62.1 inches
Find conditional probability Find mean and standard deviation 11)The age of customers at a local hardware store follows a uniform distribution over the interval from18 to 60 years old. Find the average age of customers to this hardware store. 140). 12) Suppose x is a uniform random variable with a = 20 and b = 80. Find the standard deviation of x. Find mean and standard deviation
A researcher has collected a sample of 25 respondents and the mean was calculated as 500. The sample was randomly drawn from a normal population whose standard deviation is 15.a) Estimate the population mean with 99% confidence b) Repeat the part (a) changing the population standard deviation to 30. c) Repeat the part (a) changing the population standard deviation to 60. d) Describe what happens to the confidence interval estimate when thestandard deviation is increased.
The percent of fat calories that a person in America consumes each day is normally distributed with a mean of 36 and a standard deviation of 10. Suppose that one individual is chosen at random. Find the following (round to 4 decimal places) a) Find the probability that the percent of fat calories a person consumes is more than 40. b) Find the probability that the percent of fat calories a person consumes is less than 35. c) Find the maximum number for the lower quartile of percent of fat calories. d) The middle 70% of the percent of fat calories are from 4 to
35 -The mean of a chance sample with n=25 volume is X ̅=60. Given that the standard deviation of the population is σ=12, find the confidence interval for the mean of the population with 90% probability.A) 51,052-63,948 B) 56,052-63,948 C) 56,052-68,948 D) 54,052-66,948 E) 58,052-63,948
8 and 9
A population has a mean of 100 and a standard deviation of 20. Find the z-score corresponding to each of the following sample means obtained from this population. a) M = 102 for a sample of n = 4 scores b) M = 102 for a sample of n = 100 scores
Assume that different groups of couples use a particular method of gender selection and each couple gives birth to one baby. This method is designed to increase the likelihood that each baby will be a girl, but assume that the method has no effect, so the probability of a girl is 0.50. Assume that the groups consist of 32 couples. A) Find the mean and the standard deviation for the numbers of girls in groups of 32 births.
A) When the weight of a parcel of oranges was measured, it was observed that the average 200 grams and standard deviation of 25 grams fit the normal distribution. This package contains 500 oranges. What is the probability that an orange selected from a carton is between 216 g and 234 g? (Including 216 g and 234 g) B) When the weight of a parcel of oranges was measured, it was observed that the average 200 grams and standard deviation of 25 grams fit the normal distribution. 12 out of 500 oranges in this package were under a certain weight and could not pass the test. How many grams or less did oranges fail the test? C) When the weight of a parcel of oranges was measured, it was observed that the average 190 grams and standard deviation of 25 grams fit the normal distribution. 9 out of 500 oranges in this package were under a certain weight and could not pass the test. How many grams or less did oranges fail the test? D) When the individual weight of a parcel (500 pieces) of…