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7 2 points Muzzle velocities of eight shells tested with a new gunpowder yields the following results 2959 ft/s 2970 ft/s 2899 ft/s 2999 ft/s 3018 ft/s 2900 ft/s 3000 ft/s 2943 ft/s The manufacturer claims that the new gunpowder produces an average velocity of no less than 3000 ft/s. Does the sample provide enough evidence to contradict the manufacturer's claim? Use significance level of 0.05. Provide solution for testing the hypothesis. Q2: What is the standard deviation of the velocities in ft/s? Type your answer... Previous Next6 2 points Muzzle velocities of eight shells tested with a new gunpowder yields the following results 2959 ft/s 2970 ft/s 2899 ft/s 2999 ft/s 3018 ft/s 2900 ft/s 3000 ft/s 2943 ft/s The manufacturer claims that the new gunpowder produces an average velocity of no less than 3000 ft/s. Does the sample provide enough evidence to contradict the manufacturer's claim? Use significance level of 0.05. Provide solution for testing the hypothesis. Q1: What is the sample mean of the muzzle velocities? Type your answer.. Previous Next-3poin13 B 5?? Is there a dierence in the total scores for women's and men's basketball games? A random sample of n1=55 women's games had a mean wlnning score of 1518. Another random sample of n2=60 men's games had a mean winning score of 22:90. Historical data suggest that ol :10 and 02:16. Find a 95% condence interval for the population difference plp. 13.3 to 40.7 -1814 to -5.6 -1611 to -?.9 4382 to 14.2 71618 to 77.2 Previous Next 8 2 points Muzzle velocities of eight shells tested with a new gunpowder yields the following results 2959 ft/s 2970 ft/s 2899 ft/s 2999 ft/s 3018 ft/s 2900 ft/s 3000 ft/s 2943 ft/s The manufacturer claims that the new gunpowder produces an average velocity of no less than 3000 ft/s. Does the sample provide enough evidence to contradict the manufacturer's claim? Use significance level of 0.05. Provide solution for testing the hypothesis. Q3: What type of test statistic is needed? Chi-squared test, left-tailed T statistic, left-tailed Z statistic, left-tailed Chi-squared test, two-tailed Z statistic, right-tailed O T statistic, two-tailed Z statistic, two-tailed Chi-squared test, right-tailed OO T statistic, right-tailed Previous Next