Mathematics, 13.11.2019 19:31 twhalon72
Arecent national survey found that high school students watched an average (mean) of 7.2 movies per month with a population standard deviation of 1.0. the distribution of number of movies watched per month follows the normal distribution. a random sample of 49 college students revealed that the mean number of movies watched last month was 6.5. at the 0.05 significance level, can we conclude that college students watch fewer movies a month than high school students?
1. state the null hypothesis and the alternate hypothesis. a. h0: μ ≥ 7.2; h1: μ < 7.2
b. h0: μ = 7.2; h1: μ ≠7.2
c. h0: μ > 7.2; h1: μ = 7.2
d. h0: μ ≤ 7.2; h1: μ > 7.2
2. state the decision rule.
a. reject h1 if z < –1.645
b. reject h0 if z > –1.645
c. reject h1 if z > –1.645
d. reject h0 if z < –1.645
3. compute the value of the test statistic. (negative amount should be indicated by a minus sign. round your answer to 2 decimal places.)
value of the test
4. what is the p-value? (round your answer to 4 decimal places.)
Answers: 2
Mathematics, 21.06.2019 16:50
What are the steps to solving the inequality 3b + 8 ≥ 14?
Answers: 1
Mathematics, 21.06.2019 19:30
Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?
Answers: 1
Mathematics, 21.06.2019 21:00
Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?
Answers: 2
Arecent national survey found that high school students watched an average (mean) of 7.2 movies per...
SAT, 09.12.2021 03:00
SAT, 09.12.2021 03:00
Health, 09.12.2021 03:00
Computers and Technology, 09.12.2021 03:00
Chemistry, 09.12.2021 03:00
Business, 09.12.2021 03:00
SAT, 09.12.2021 03:00
Computers and Technology, 09.12.2021 03:00
SAT, 09.12.2021 03:00