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The mean SAT score in mathematics is 526. The standard deviation of these scores is 46. A special preparation course claims that the mean SAT score, μ, of its graduates is greater than 526. An independent researcher tests this by taking a random sample of 150 students who completed the course; the mean SAT score in mathematics for the sample was 532. At the 0.10 level of significance, can we conclude that the population mean SAT score for graduates of the course is greater than 526? Assume that the population standard deviation of the scores of course graduates is also 46. Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places, and round your responses as specified below. (If necessary, consult a list of formulas.) (a) State the null hypothesis Ho and the alternative hypothesis H₁. Ho H₁ :0 (b) Determine the type of test statistic to use. (Choose one) (c) Find the value of the test statistic. (Round to three or more decimal places.) F X a S 00 Р O

The mean SAT score in mathematics is 526. The standard deviation of these scores is 46. A special preparation course claims that the mean SAT score, μ, of its graduates is greater than 526. An independent researcher tests this by taking a random sample of 150 students who completed the course; the mean SAT score in mathematics for the sample was 532. At the 0.10 level of significance, can we conclude that the population mean SAT score for graduates of the course is greater than 526? Assume that the population standard deviation of the scores of course graduates is also 46. Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places, and round your responses as specified below. (If necessary, consult a list of formulas.) (a) State the null hypothesis Ho and the alternative hypothesis H₁. Ho H₁ :0 (b) Determine the type of test statistic to use. (Choose one) (c) Find the value of the test statistic. (Round to three or more decimal places.) F X a S 00 Р O

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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HW NINE

Options for part (b)

   a. "Z"  b. "t"  c. "Chi-square"  d. "F"

The mean SAT score in mathematics is 526. The standard deviation of these scores is 46. A special preparation course claims that the mean SAT score, μ, of its graduates is greater than 526. An independent researcher tests this by taking a random sample of 150 students who completed the course; the mean SAT score in mathematics for the sample was 532. At the 0.10 level of significance, can we conclude that the population mean SAT score for graduates of the course is greater than 526? Assume that the population standard deviation of the scores of course graduates is also 46. Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places, and round your responses as specified below. (If necessary, consult a list of formulas.) (a) State the null hypothesis Ho and the alternative hypothesis H₁. Ho H₁ :0 (b) Determine the type of test statistic to use. (Choose one) (c) Find the value of the test statistic. (Round to three or more decimal places.) 0 (d) Find the p-value. (Round to three or more decimal places.) (e) Can we support the preparation course's claim that the population mean SAT score of its graduates is greater than 526? O Yes O No μ X S ■ ☐ O 0=0 OSO ☐#0 ロ<ロ Р <Q Ś 00 020 O>O
Transcribed Image Text:The mean SAT score in mathematics is 526. The standard deviation of these scores is 46. A special preparation course claims that the mean SAT score, μ, of its graduates is greater than 526. An independent researcher tests this by taking a random sample of 150 students who completed the course; the mean SAT score in mathematics for the sample was 532. At the 0.10 level of significance, can we conclude that the population mean SAT score for graduates of the course is greater than 526? Assume that the population standard deviation of the scores of course graduates is also 46. Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places, and round your responses as specified below. (If necessary, consult a list of formulas.) (a) State the null hypothesis Ho and the alternative hypothesis H₁. Ho H₁ :0 (b) Determine the type of test statistic to use. (Choose one) (c) Find the value of the test statistic. (Round to three or more decimal places.) 0 (d) Find the p-value. (Round to three or more decimal places.) (e) Can we support the preparation course's claim that the population mean SAT score of its graduates is greater than 526? O Yes O No μ X S ■ ☐ O 0=0 OSO ☐#0 ロ<ロ Р <Q Ś 00 020 O>O
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