Question: Statistics ohm.lumenlearning.com Content Content Unit 10 Homework Ave, Score: 3/20 3/20 answered 217 Question 7 If n=12, a(x-bar)=45, and s=5, construct a confidence interval at

Statistics

217 Question 7 If n=12, a(x-bar)=45, and s=5, construct a confidence interval

at a 95% confidence level. Assume the data came from a normally

distributed population. Give your answers to one decimal place. Hint: You should

use Confidence Interval MS Excel Template or Minitab or this website(mathcracker.com) _

to calculate the confidence interval. Question Help: Video Message instructor Calculator Submit

Question MacBook AirContent Content Unit 10 Homework Score: 3/20 3/20 answered .

Question 14 You wish to test the following claim (Ha) at a

significance level of a = 0.02. Ho: M = 73.2 Ha: M

# 73.2 You believe the population is normally distributed, but you do

not know the standard deviation. You obtain a sample of size n

= 82 with mean M = 66.7 and a standard deviation of

SD = 19.1. Hint: You should use Hypothesis Test MS Excel Template

ohm.lumenlearning.com Content Content Unit 10 Homework Ave, Score: 3/20 3/20 answered 217 Question 7 If n=12, a(x-bar)=45, and s=5, construct a confidence interval at a 95% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place. Hint: You should use Confidence Interval MS Excel Template or Minitab or this website(mathcracker.com) _ to calculate the confidence interval. Question Help: Video Message instructor Calculator Submit Question MacBook AirContent Content Unit 10 Homework Score: 3/20 3/20 answered . Question 14 You wish to test the following claim (Ha) at a significance level of a = 0.02. Ho: M = 73.2 Ha: M # 73.2 You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size n = 82 with mean M = 66.7 and a standard deviation of SD = 19.1. Hint: You should use Hypothesis Test MS Excel Template _ or Minitab or this website(mathcracker.com) _ for calculations. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to three decimal places.) p-value = The p-value is... O less than (or equal to) a greater than a This test statistic leads to a decision to... O reject the null accept the null O fail to reject the null MacBook Air 20 Q 0 Di F2 F3 F4 F5 F6 F7 F8ohm.lumenlearning.com C Content Content Unit 10 Homework re, Score: 3/20 3/20 answered Question 15 > / You wish to test the following claim (Ha) at a significance level of a = 0.02. Ho: M = 74.5 Ha: u A In a survey, 24 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $49 and standard deviation of $9. Find the margin of error at a 95% confidence level. Give your answer to two decimal places. Hint: You should use Confidence Interval MS Excel Template For Minitab or this website(mathcracker.com) to calculate the confidence interval. Question Help: Video Message instructor Calculator Submit Question MacBook Airohm.lumenlearning.com Content Content Unit 10 Homework ware Ave, Score: 3/20 3/20 answered NY 14217 Question 12 A If n=24, a(x-bar)=43, and s=2, construct a confidence interval at a 80% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place. Hint: You should use Confidence Interval MS Excel Template or Minitab or this website(mathcracker.com) _ to calculate the confidence interval. Question Help: Video Message instructor Calculator Submit Question MacBook Airohm.lumenlearning.com Content Content Unit 10 Homework Ive, Score: 3/20 3/20 answered 217 . Question 2 Express the confidence interval 757.9 A If n=28, a(x-bar)=35, and s=4, find the margin of error at a 98% confidence level Give your answer to two decimal places. Hint: You should use Confidence Interval MS Excel Template ? or Minitab or this website(mathcracker.com) to calculate the confidence interval. Question Help: Video Message instructor Calculator Submit Questionohm.lumenlearning.com C Content Content Oo Unit 10 Homework aware Ave, Score: 3/20 3/20 answered NY 14217 . Question 17 Test the claim that the mean GPA of night students is larger than 2.6 at the 0.005 significance level. The null and alternative hypothesis would be: Ho: M = 2.6 Ho :p 2.6 Ho : p 2 0.65 Ho : p = 0.65 H1: u + 2.6 H1 :p > 0.65 H1:/ > 2.6 H1:M / Test the claim that the mean GPA of night students is significantly different than 2.2 at the 0.05 significance level. The null and alternative hypothesis would be: Ho:p = 0.55 Ho : M = 2.2 Ho :M 2.2 H1 :p 0.55 The test is: left-tailed two-tailed right-tailed Based on a sample of 50 people, the sample mean GPA was 2.19 with a standard deviation of 0.05 The test statistic is: (to 2 decimals) The p-value is: (to 2 decimals) Based on this we: O Reject the null hypothesis Fail to reject the null hypothesis Hint: You should use Hypothesis Test MS Excel Template _ or Minitab or this website(mathcracker.com) for calculations. MacBook Airohm.lumenlearning.com Content Content Unit 10 Homework Score: 3/20 3/20 answered .Question 13 You wish to test the following claim (Ha) at a significance level of a = 0.02. Ho: u = 51.3 Ha: M

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