Question

A baseball team claims that the mean length of its games is at most 2.5 hours. State Ho and H, in words and in symbols. Then determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed. Explain your reasoning. O A. The null hypothesis expressed in words is "the mean length of a baseball team's games is not 2.5 hours. The null hypothesis is expressed symbolically as, "Hox2.5." O B. The null hypothesis expressed in words is, "the mean length of a baseball team's games is at most 2.5 hours." The null hypothesis is expressed symbolically as, Ho52.5. O C. The null hypothesis expressed in words is the mean length of a baseball team's games is at least 25 hours. The null hypothesis is expressed symbolically as. "H: 22.5" OD. The null hypothesis expressed in words is, "the mean length of a baseball team's games is 2.5 hours." The null hypothesis is expressed symbolically as, "H: -25. State the alternative hypothesis in words and in symbols. Choose the correct answer below. O A. The alternative hypothesis expressed in words is the mean length of a baseball team's games is 2.5 hours." The alternative hypothesis is expressed symbolically as, 25- OB. The alternative hypothesis expressed in words is the mean length of a baseball team's games is not 2.5 hours." The alternative hypothesis is expressed symbolically as, 'H: **2.5. O C. The alternative hypothesis expressed in words is, "the mean length of a baseball team's games is more than 2.5 hours." The alternative hypothesis is expressed symbolically as "H >2.5.- O D. The alternative hypothesis expressed in words is, "the mean length of a baseball team's games is less than 2,5 hours. The alternative hypothesis is expressed symbolically as "H: <2.5 The hypothesis test is because the hypothesis contains Click to select your answer.

Answer 1

null hypothesis : option B)

s, une mean length of a baseball team's games is not 2.5 hours." The null hypothesis is expressed symbolically as, "Hy: *25. OB. The null hypothesis expressed in words is, "the mean length of a baseball team's games is at most 2.5 hours." The null hypothesis is expressed symbolically as. Haru2,5

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OC. The alternative hypothesis expressed in words is, "the mean length of a baseball team's games is more than 2.5 hours." The alternative hypothesis is expressed symbolically as "H >2.5."

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hypothesis test is right tailed because the alternative hypothesis contains > sign