A regulation baseball should weigh 148 grams. A company produces baseballs for the MLB. To help...

 

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A regulation baseball should weigh 148 grams. A company produces baseballs for the MLB. To help ensure a high degree of accuracy, a random sample of 19 baseballs is drawn from the production line every 45 minutes and each baseball is measured for accuracy. If the average weight of the sample is found to be significantly different than 148 grams, then the production line is shut down for inspection. The mean weight of a recent sample of 19 baseballs was found to be 153.79 grams. Use the p-value method to test the hypothesis that the mean weight of a baseball produced by this company is different than 148 grams, using a significance level of 10%. Assume that the distribution of weights of all baseballs produced by this company is known to be approximately normally distributed with a standard deviation of 20.5 grams. State the null and alternative hypothesis for this test. Ho:7 H: Determine if this test is left-tailed, right-tailed, or two-tailed. O right-tailed O two-tailed O left-tailed Should the standard normal (2) distribution or Student's (f) distribution be used for this test? O The Student's f distribution should be used The standard normal (a) distribution should be used Determine the test statistic for the hypothesis test. Round the solution to two decimal places. Determine the p-value for the hypothesis test. Round the solution to four decimal places. A regulation baseball should weigh 148 grams. A company produces baseballs for the MLB. To help ensure a high degree of accuracy, a random sample of 19 baseballs is drawn from the production line every 45 minutes and each baseball is measured for accuracy. If the average weight of the sample is found to be significantly different than 148 grams, then the production line is shut down for inspection. The mean weight of a recent sample of 19 baseballs was found to be 153.79 grams. Use the p-value method to test the hypothesis that the mean weight of a baseball produced by this company is different than 148 grams, using a significance level of 10%. Assume that the distribution of weights of all baseballs produced by this company is known to be approximately normally distributed with a standard deviation of 20.5 grams. State the null and alternative hypothesis for this test. Ho:7 H: Determine if this test is left-tailed, right-tailed, or two-tailed. O right-tailed O two-tailed O left-tailed Should the standard normal (2) distribution or Student's (f) distribution be used for this test? O The Student's f distribution should be used The standard normal (a) distribution should be used Determine the test statistic for the hypothesis test. Round the solution to two decimal places. Determine the p-value for the hypothesis test. Round the solution to four decimal places.