A credit card company claims that the mean credit card debt for individuals is greater than $4,900. You want to test this claim. You find that a random sample of 38 cardholders has a mean credit card balance of $5,050 and a standard deviation of $600. At a = 0.10. can vou suDport the claim? Complete parts (a) throuah (d) below. Assume the population is normallv distributed. O A. Ho: H= $4,900 H:H#$4,900 O B. Ho: > $4,900 Hus $4,900 OC. Ho: u2$4,900 H:H<$4,900 OE. Ho: HS$4,900 OF. Ho: = $4,900 O D. Ho: >$4,900 H: u>$4,900 H:u> $4,900 H:us $4,900 (b) Find the critical value and identify the rejection region. What is the critical value, to? (Use a comma to separate answers as needed. Round to three decimal places as needed.) Determine the rejection region. Select the correct choice below and fill in the answer box within your choice. (Round to three decimal places as needed.) O B. t< and t> OD. OC. t< (c) Find the standardized test statistic t. t= (Round to two decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis. O A. Reject H, because the test statistic is in the rejection region. O B. Fail to reject Ho because the test statistic is in the rejection region. O C. Reject Ho because the test statistic is not in the rejection region. O D. Fail to reiect Hn because the test statistic is not in the reiection reaion.
A credit card company claims that the mean credit card debt for individuals is greater than $4,900. You want to test this claim. You find that a random sample of 38 cardholders has a mean credit card balance of $5,050 and a standard deviation of $600. At a = 0.10. can vou suDport the claim? Complete parts (a) throuah (d) below. Assume the population is normallv distributed. O A. Ho: H= $4,900 H:H#$4,900 O B. Ho: > $4,900 Hus $4,900 OC. Ho: u2$4,900 H:H<$4,900 OE. Ho: HS$4,900 OF. Ho: = $4,900 O D. Ho: >$4,900 H: u>$4,900 H:u> $4,900 H:us $4,900 (b) Find the critical value and identify the rejection region. What is the critical value, to? (Use a comma to separate answers as needed. Round to three decimal places as needed.) Determine the rejection region. Select the correct choice below and fill in the answer box within your choice. (Round to three decimal places as needed.) O B. t< and t> OD. OC. t< (c) Find the standardized test statistic t. t= (Round to two decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis. O A. Reject H, because the test statistic is in the rejection region. O B. Fail to reject Ho because the test statistic is in the rejection region. O C. Reject Ho because the test statistic is not in the rejection region. O D. Fail to reiect Hn because the test statistic is not in the reiection reaion.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A credit card company claims that the mean credit card debt for individuals is greater than $4,900. You want to test this claim. You find that a random sample of 38 cardholders has a mean credit card balance of $5,050 and a standard deviation of
$600. At a = 0.10. can vou suDport the claim? Complete parts (a) throuah (d) below. Assume the population is normallv distributed.
O A. Ho: H= $4,900
H:H#$4,900
O B. Ho: > $4,900
H: us $4,900
OC. Ho: u2$4,900
H:H<$4,900
OE. Ho: HS $4,900
H:u>$4,900
OF. Ho: = $4,900
H:> $4,900
O D. Ho: H> $4,900
HuS $4,900
(b) Find the critical value and identify the rejection region.
What is the critical value, to?
(Use a comma to separate answers as needed. Round to three decimal places as needed.)
Determine the rejection region. Select the correct choice below and fill in the answer box within your choice.
(Round to three decimal places as needed.)
O B. t< and t>
O A. t>
OC. t<
OD. <t<
(c) Find the standardized test statistic t
t= (Round to two decimal places as needed.)
(d) Decide whether to reject or fail to reject the null hypothesis.
O A. Reject Ho because the test statistic is in the rejection region.
O B. Fail to reject Ho because the test statistic is in the rejection region.
O C. Reject Ho because the test statistic is not in the rejection region.
O D. Fail to reiect Hn because the test statistic is not in the reiection reaion.
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