A used car dealer says that the mean price of a three-year-old sports utility vehicle is $19,000. You suspect this claim is incorrect and find that a random sample of 21 similar vehicles has a mean price of $19,857 and a standard deviation of$1930. Is there enough evidence to reject the claim at a=0.05? Complete parts (a) through (e) below. Assume the population is normally distributed.CE(a) Write the claim mathematically and identify Ho and HaWhich of the following correctly states Ho and H₂?OA. Ho: 2$19,000OB. Ho: =$19,000Hy:μ<$19,000H₂H<$19,000C. Ho: #$19,000H₂H=$19,000(J D. Ho: H =$19,000OE. Ho: H=$19,000H₂:μ>$19,000OF. Ho: μ>$19,000Hus$19,000H:μ#$19,000(b) Find the critical value(s) and identify the rejection region(s).What is (are) the critical value(s), to?to-2.086,2.086(Use a comma to separate answers as needed. Round to three decimal places as needed.)Determine the rejection region(s). Select the correct choice below and fill in the answer box(es) within your choice.(Round to three decimal places as needed.).OA. OB. t<OD. t>

Given data : sample size, n =21 sample mean, x̄ = 19857 sample standard deviation,s=…

Answered: A used car dealer says that the mean…

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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A random sample of 100,000 credit sales in a department store showed an average sale of $81.25. From past data, it is known that the standard deviation of the population is $10.00. Determine the standard error of the mean. O 0.0001 O 0.0100 O 0.0316 O 10.00
A used car dealer says that the mean price of a three-year-old sports utility vehicle is $23,000. You suspect this claim is incorrect and find that a random sample of 21 similar vehidles has a mean price of $23,626 and a standard deviation of $1978. Is there enough evidence to reject the claim at a = 0.01? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Write the claim mathematically and identify Ho and H Which of the following correctly states Ho and H,? O A. Ho: u#$23,000 H:= $23,000 O B. Ho: = $23,000 C. Hạ: u= $23,000 Hu $23,000 H us $23,000 OF. Ho: u= $23,000 Hu> $23,000 Hu< $23,000 (b) Find the critical value(s) and identify the rejection region(s). What is(are) the critical value(s), to? (Use a comma to separate answers as needed. Round to three decimal places as needed.)
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Assume the samples are random and independent, the populations are nomally distributed, and the population variances are equal. The table available below shows the prices (in dollars) for a sample of automobile batteries. The prices are classified according to battery type. At a = 0.10, is there enough evidence conclude that at least one mean battery price is different from the others? Complete parts (a) through (e) below. E Click the icon to view the battery cost data. (a) Let u1. P2. H3 represent the mean prices for the group size 35, 65, and 24/24F respectively. Identify the claim and state Ho and H. H Cost of batteries by type The claim is the V hypothesis. Group size 35 Group size 65 Group size 24/24F 101 111 121 124 D 146 173 182 278 124 140 141 89 (b) Find the critical value, Fo, and identify the rejection region. 90 79 84 The rejection region is F Fo, where Fo = (Round to two decimal places as needed.) (c) Find the test statistic F. Print Done F= (Round to two decimal places as…
A used car dealer says that the mean price of a three-year-old sports utility vehicle is $21,000. You suspect this claim is incorrect and find that a random sample of 24 similar vehicles has a mean price of $21,719 and a standard deviation of $1996. Is there enough evidence to reject the claim at a = 0.01? Complete parts (a) through (e) below. Assume the population is normally distributed. e (a) Write the claim mathematically and identify Ho and Ha. E1 Which of the following correctly states Ho and H,? O A. Ho: u> $21,000 H3: us$21,000 O B. Ho: H= $21,000 OC. Ho: u#$21,000 Ha:u $21,000 O E. Ho:H= $21,000 Ha: u#$21,000 OF. Ho: u2$21,000 H:u O B. t O D.
A credit card company claims that the mean credit card debt for individuals is greater than $5,300. You want to test this claim. You find that a random sample of 36 cardholders has a mean credit card balance of $5,491 and a standard deviation of $550. At a= 0.01, can you support the claim? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Write the claim mathematically and identify Ho and Ha. Which of the following correctly states Ho and H,? O B. Ho: µs $5,300 O A. Ho: µ> S5,300 H3: us $5,300 O C. H: μ > $5,300 H3: us $5,300 H3: u> $5,300 OF Ho: μ = 55,300 Ha: u# 55,300 Ο D . Ho: μ2 55,300 O E. Ho: µ= $5,300 Ha: µ $5,300 (b) Find the critical value(s) and identify the rejection region(s). What is(are) the critical value(s), to? to =0 (Use a comma to separate answers as needed. Round to three decimal places as needed.) Determine the rejection region(s). Select the correct choice below and fill in the answer box(es) within your choice. (Round to…
A credit card company claims that the mean credit card debt for individuals is greater than $5,300. You want to test this claim. You find that a random sample of 30 cardholders has a mean credit card balance of $5,400 and a standard deviation of $625. At a = 0.05, can you support the claim? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Write the claim mathematically and identify Ho and Ha. Which of the following correctly states H, and H, ? O A. Ho: H2 $5,300 О В. Н: и> $5,300 О с. Но: и- $5,300 Ha: µ $5,300 O D. Ho: µ> $5,300 ОЕ. Но: и3 $5,300 OF. Ho: Hs $5,300 Ha: us $5,300 Ha: H# $5,300 Ha: u> $5,300 (b) Find the critical value(s) and identify the rejection region(s). What is(are) the critical value(s), to? to =0 (Use a comma to separate answers as needed. Round to three decimal places as needed.) Determine the rejection region(s). Select the correct choice below and fill in the answer box(es) within your choice. (Round to three decimal…
A credit card company claims that the mean credit card debt for individuals is greater than $5,200. You want to test this claim. You find that a random sample of 34 cardholders has a mean credit card balance of $5,414 and a standard deviation of $675. At a = 0.10, can you support the claim? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Write the claim mathematically and identify Ho and H. Which of the following correctly states Ho and H, ? c. Hạ: us$5,200 H p> $5,200 O B. Ho: = $5,200 H, u$5,200 O E. Ho: u= $5,200 H u> $5,200 O A. Ho: u> $5,200 H us$5,200 O D. Ho: u2 $5,200 Hu $5,200 H:us$5,200 (b) Find the critical value(s) and identify the rejection region(s). What is(are) the critical value(s), to? 6 = 1.308 (Use comma to separate answers as needed. Round to three decimal places as needed.) Determine the rejection region(s). Select the correct choice below and fill in the answer box(es) within your choice. (Round to three decimal places as…
A credit card company claims that the mean credit card debt for individuals is greater than $5,200. You want to test this claim. You find that a random sample of 34 cardholders has a mean credit card balance of $5,414 and a standard deviation of $675. At a = 0.10, can you support the claim? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Write the claim mathematically and identify Ho and Ha- Which of the following correctly states Ho and H,? O A. Ho: u> $5,200 H:us$5,200 O B. Ho: u= $5,200 Hu#$5,200 C. Hạ: us $5,200 Hu> $5,200 O D. Ho: u2 $5,200 Hu $5,200 OF. Ho: > $5,200 Hi uS$5,200 (b) Find the critical value(s) and identify the rejection region(s). What is(are) the critical value(s), to? (Use a comma to separate answers as needed. Round to three decimal places as needed.)
A used car dealer says that the mean price of a three-year-old sports utility vehicle is $21,000. You suspect this claim is incorrect and find that a random sample of 21 similar vehicles has a mean price of $21,848 and a standarc deviation of $1985. Is there enough evidence to reject the claim at a = 0.05? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Write the claim mathematically and identify Ho and Ha. Which of the following correctly states Ho and H2? O A. Ho: =$21,000 B. Ho: H= $21,000 Ha: H#$21,000 OC. Ho: H > $21,000 Hgius $21,000 HaiH>$21,000 OD. Ho: H#$21,000 HaiH=$21,000 E. Ho:H= $21,000 Ha: H O C. t D. t< (c) Find the standardized test statistic t. t= (Round to two decimal places as needed.)
A credit card company claims that the mean credit card debt for individuals is greater than $5,100. You want to test this claim. You find that a random sample of 36 cardholders has a mean credit card balance of $5,271 and a standard deviation of $650. At a = 0.05, can you support the claim? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Write the claim mathematically and identify H, and Ha. Which of the following correctly states H, and H,? Ho: µs $5,100 Ha: µ> $5,100 B. Ho: µ> $5,100 Ha: us $5,100 C. Ho: µ= $5,100 Ha: u# $5,100 Ho:µ= $5,100 Hai µ > $5,100 O E. Ho: µ2 $5,100 Ha: u $5,100 Hạ: us $5,100 (b) Find the critical value(s) and identify the rejection region(s). What is(are) the critical value(s), to? to = = 1.690 (Use a comma to separate answers as needed. Round to three decimal places as needed.) Determine the rejection region(s). Select the correct choice below and fill in the answer box(es) within your choice. (Round to three decimal…
A credit card company claims that the mean credit card debt for individuals is greater than $5,300. You want to test this claim. You find that a random sample of 33 cardholders has a mean credit card balance of $5,566 and a standard deviation of $575. At a= 0.01, can you support the claim? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Write the claim mathematically and identify Ho and Ha ' Which of the following correctly states Ho and Ha? OA. H: H> $5,300 O B. Ho: H= $5,300 O C. Ho: H= $5,300 Ha:H $5,300 Hus $5,300 Hai H> $5,300 OD. Ho H2 $5,300 O E. Ho H> $5,300 Haius $5,300 OF. Ho:Hs $5,300 HaiH $5,300 Click to select your answer and then click Check Answer.

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