Suppose that BC financial aid alots a textbook stipend by claiming that the average textbook at BC bookstore costs $$ 88.74. You want to test this claim. Based on a sample of 70 textbooks at the store, you find an average of 92.14 and a standard deviation of 29.6. The point estimate is: (to 3 decimals) The 95 % confidence interval (use z*) is: to (to 3 decimals) Based on this we: Reject the null hypothesis Fail to reject the null hypothesis

Suppose that BC financial aid alots a textbook stipend by claiming that the average textbook at BC bookstore costs $$ 88.74. You want to test this claim. Based on a sample of 70 textbooks at the store, you find an average of 92.14 and a standard deviation of 29.6. The point estimate is: (to 3 decimals) The 95 % confidence interval (use z*) is: to (to 3 decimals) Based on this we: Reject the null hypothesis Fail to reject the null hypothesis

Name: Suppose that BC financial aid alots a textbook stipend by claiming tha
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: Suppose that BC financial aid alots a textbook stipend by claiming that the average textbook at BC bookstore costs $$ 88.74. You want to test this claim.Based on a sample of 70 textbooks at the store, you find an average of 92.14 and a standard devia

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

Use z scores to compare the given values. The tallest living man at one time had a height of 238 cm. The shortest living man at that time had a height of 142.4 cm. Heights of men at that time had a mean of 175.45 cm and a standard deviation of 5.59 cm. Which of these two men had the height that was more extreme? ... Since the z score for the tallest man is z = 0 and the z score for the shortest man is z = the man had the height that was Im- more extreme. (Round to two decimal places.) shortest tallest
The lengths of pregnancies in a small rural village are normally distributed with a mean of 265 days and a standard deviation of 16 days. In what range would you expect to find the middle 95% of most pregnancies? Between and If you were to draw samples of size 59 from this population, in what range would you expect to find the middle 95% of most averages for the lengths of pregnancies in the sample? Between and Enter your answers as numbers. Your answers should be accurate to 1 decimal places. Question Help: Message instructor Submit Question 824 tv esc 20 888 F1 F2 F3 F4 F5 F6 @ # $ % & 1 2 4 Q W Y T
You are testing the claim that the mean GPA of night students is different from the mean GPA of day students. You sample 20 night students, and the sample mean GPA is 2.94 with a standard deviation of 0.8. You sample 55 day students, and the sample mean GPA is 2.56 with a standard deviation of 0.44. Test the claim using a 1% level of significance. Assume the population standard deviations are unequal and that GPAs are normally distributed. What are the correct hypotheses? Based on the hypotheses, find the following:Test Statistic = Critical Values = ±
Suppose that BC financial aid alots a textbook stipend by claiming that the average textbook at BC bookstore costs $$ 88.09. You want to test this claim. Based on a sample of 100 textbooks at the store, you find an average of 85.09 and a standard deviation of 19.8.The point estimate is: (to 3 decimals)The 99 % confidence interval (use z*) is: to (to 3 decimals)
If n=-22, (x-bar)=50, and s-6, construct a confidence interval at a 90% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place.
Find the following. Enter your answer rounded to at least two decimals. Z(a/2) for the 95% confidence interval
You suspect that people living in urban areas produce on average more garbage (X)than those living in rural areas (Y). To verify this opinion, you draw two samples and collect information on the amount of garbage produced in a month (measured in kilos). The first sample, made of 8 subjects living in an urban area, provides a sample mean equal to 40.5 and a sample standard deviation equal to 5.6; in the second sample, made of 10 subjects living in rural areas, the sample mean is 35.6 and the sample standard deviation is 7.5. It is assumed that the two populations are normal with the same unknown variance.Test the null hypothesis that the two population means are equal against a one-sided alternative according to which people living in urban areas produce on average more garbage than those living in rural areas. Use a 1% significance level.
You are testing the claim that the mean GPA of night students is different from the mean GPA of day students. You sample 60 night students, and the sample mean GPA is 2.83 with a standard deviation of 0.52. You sample 50 day students, and the sample mean GPA is 3.21 with a standard deviation of 0.65. Test the claim using a 1% level of significance. Assume the population standard deviations are unequal and that GPAS are normally distributed. Give answer to at least 4 decimal places. What are the correct hypotheses? Ho: (H, H, H1: [H, Based on the hypotheses, find the following: Test Statistic = -3.3161 Critical Values = +2.576 X (Just enter the positive CV.)
Q3. A business man want to decide about the hair-cut prices and so he decided to know the mean time spet on hair-cuts. He has no record of time needed for hair-cut. He wanted a max error of +0.2. He took a sample of size 30 and found that s= 1.5 min. Find the sample size needed to achieve the 95% confidence level.
The owner of a local gym has recently surveyed a random sample of n = 300 customers of the club. She would now like to determine whether or not the mean age of her customers is over 35. If so, she plans to alter the fitness equipment to appeal to an older crowd. If not, no changes will be made. Suppose she found that the sample mean was 35.5 years and the population standard deviation, s, was 5 years. What is the p-value associated with the test statistic? O none of these O 0.46 O 0.54 O 0.04
work shown would be so appreciated
Q7 A researcher wants to estimate the mean income of all physicians in a city at a 95% confidence level. The standard deviation of the incomes of all physicians in this city is RM17,500. What sample size is required to obtain an estimate that is within RM5000 of the population mean?