H0:μ=25.735H0:μ=25.735 H1:μ≠25.735H1:μ≠25.735 Your sample consists of 46 subjects, with a mean of 24 and a standard deviation of 4.73 Calculate the test statistic, rounded to 2 decimal places
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H0:μ=25.735H0:μ=25.735
H1:μ≠25.735H1:μ≠25.735
Your sample consists of 46 subjects, with a mean of 24 and a standard deviation of 4.73
Calculate the test statistic, rounded to 2 decimal places
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- The cost of unleaded gasoline in the Bay Area once followed an unknown distribution with a mean of $ 4.87 and a standard deviation of $ 0.05. A sample of 15 Bay Area gas stations are randomly chosen. We are interested in the average cost of gasoline for the 15 service stations. The distribution to use for the average cost of gasoline for the 15 service stations is: Select one: a. N (4.87, 0.0129) b. N (0.3247, 0.0006) c. N (4.87, 0.0033) d. N (4.87, 0.0002) e. N (0.3247, 0.0033)Use the 1odwing Wildlife: Coyotes A random sample of 46 adult coyotes in a region of northern Minnesota showed the average age to be z = 2.05 years, with sample standard deviation 8 = 0.82 years (based on information from the book Coyotes: Biology, Behavior and Management by M. Bekoff, Academic Press). However, it is thought that the overall population mean age of coyotes is µ=1.75. Do the sample data indicate that coyotes in this region of northern Minnesota tend to live longer than the average of 1.75 years? Use a = 0.01. Fl in the blanks a 007 • Ho u- 175 years * H u> 176 yean QUESTION 7 What is your test statistic? (t-statistic) 2.48 QUESTION 8 What is your p-value? (Hint You will need the degrees of freedom to find the p-value.) <0.01d QUESTION 9 Do you reject the null hypothesis? O Yes NoIn a survey of women in a certain country (ages 20 - 29), the mean height was 63.5 inches with a standard deviation of 2.94 inches. Answer the following questions about the specified normal distribution. (a) What height represents the 95th percentile? (b) What height represents the first quartile? Click to view page 1 of the table. Click to view page 2 of the table. (2) The height that represents the 95th percentile is inches (Round to two decimal places as needed.) (b) The height that represents the first quartile is inches (Round to two decimal places as needed.)
- A consumer group claims that the average annual consumption of high fructose corn syrup by a person in the U.S. is 48.8 pounds. You believe it is higher. You take a simple random sample of 31 people in the U.S. and find an average of 53.3 pounds with a standard deviation of 5.2 pounds. Test at 5% significance.Round to the fourthH0: HA: Test Statistic: P-value: Did something significant happen? Select the Decision Rule: There enough evidence to concludeThe distribution of heights in a population of women is approximately normal. Sixteen percent of the women have heights less than 62 inches. About 97.5% of the women have heights less than 71 inches. Use the empirical rule to estimate the mean and standard deviation of the heights in this population. Mean: K inches Standard Deviation: inchesWatching TV: In 2012, the General Social Survey asked a sample of 1326 people how much time they spent watching TV each day. The mean number of hours was 3.02 with a standard deviation of 2.64. A sociologist claims that people watch a mean of 3 hours of TV per day. Do the data provide sufficient evidence to conclude that the mean hours of TV watched per day differs from the claim? Use the a=0.01 level of significance and the critical value method. Part: 0 / 5 Part 1 of 5 State the appropriate null and alternate hypotheses. H, : OThe number of reviews for each of the local restaurants is counted. The results are normally distributed with a mean of 25 and a standard deviation of 4. What percentage of restaurants have between 15 and 20 reviews? Standard Normal Table 2 9.95% 6.2% 120 10.57% 50%Watching TV: The 2012 general Social Survey asked a large number of people how much time they spent watching TV each day. The mean number of hours was 3.09 with a standard deviation of 2.9. Assume that in a sample of 37 teenagers, the sample standard deviation of daily TV time is 2.2 hours, and that the population of TV watching times is normally distributed. Can you conclude that the population standard deviation of TV watching times for teenagers differs from 2.9? Use the a=0.10 level of significance.Due in Testing: Ho: u = 40.26 H1: u # 40.26 Your sample consists of 29 subjects, with a mean of 42.1 and a sample standard deviation (s) of 4.48. Calculate the test statistic, rounded to 2 decimal płaces.Watching TV: The 2012 general Social Survey asked a large number of people how much time they spent watching TV each day. The mean number of hours was 3.09 with a standard deviation of 2.73. Assume that in a sample of 32 teenagers, the sample standard deviation of daily TV time is 3.2 hours, and that the population of TV watching times is normally distributed. Can you conclude that the population standard deviation of TV watching times for teenagers is greater than 2.73 ? Use the a= 0.01 level of significance. Part 1 of 5 State the appropriate null and alternate hypotheses. Ho:0 2.73 H1:0 > . 2.73 This hypothesis test is a right-tailed test. Part: 1/5 Part 2 of 5 Find the critical value. Round the answer to three decimal places. For a-0.01, the critical value is 岛国Watching TV: In 2012, the General Social Survey asked a sample of 1318 people how much time they spent watching TV each day. The mean number of hours was 2.95 with a standard deviation of 2.63. A sociologist claims that people watch a mean of 3 hours of TV per day. Do the data provide sufficient evidence to conclude that the mean hours of TV watched per day differs from the claim? Use the a= 0.01 level of significance and the critical value method. Part: 0 / 5 Part 1 of 5 State the appropriate null and alternate hypotheses. H: H₁ : This hypothesis test is a (Choose one) test. 0<0 ☐☐ X □<口 μ 0=0 ŚScores on the ACT college entrance exam follow a normal distribution with mean 21 and standard deviation 5. Wayne's z-score on the ACT was -0.6. What was Wayne's actual ACT score? O 18 O 3 O 16 O 13 24SEE MORE QUESTIONS