The mean IQ of statistics teachers is greater than 110. Write the null and alter

Question

The mean IQ of statistics teachers is greater than 110. Write the null and alternative hypotheses. A) H_0: mu lessthanorequalto 110, H_a: mu > 110 A candidate for governor of a particular state claims to be favored by at least half of the voters. State this claim mathematically. Write the null and alternative hypotheses. Identify which hypothesis is the claim. A) claim: p greaterthanorequalto 0.5; H_0: p greaterthanorequalto 0.5, H_a: p 14 using a P-value. You are given the sample statistics n = 50, x = 14.3, and s = 1.2. Find the P-value. A) 0.0384 B) 0.0012 C) 0.0128 D) 0.1321 Given H_a: mu > 85 and P = 0.007. Do you reject or fail to reject H_0 at the 0.01 level of significance A) fail to reject H_0 B) not sufficient information to decide C) reject H_0 Find the critical value for a right-tailed test with alpha = 0.01 and n = 75. A) 2.575 B) 2.33 C) 1.96 D) 1.645

Explanation / Answer

(1) Ho: 110 versus Ha: mu > 110

(2) Ho: p 0.5 versus Ha: p > 0.5

Ha is the claim

(3) This is a two-tailed hypothesis

(4) The confidence level used would be 95%.

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