Write the null hypothesis and alternative hypotheses

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As part of a study of the cost of attending art school, you want to test the claim that the mean cost of one credit hour is less than $580. A random sample of 15 art schools has a mean of $572.48. Assume the population standard deviation is $99.20 and the population is normally distributed. Use 0.07

(a) Write the null hypothesis and alternative hypotheses mathematically and state which one is the claim.

H0: ____________  Ha: ____________  Claim: _______________

(a) What is the critical value?

(b) What is the standardized test statistic?

(c) Should you Reject H0 or   Fail to reject H0?

(d) There is sufficient / insufficient evidence to reject / support the claim.

Reference no: EM132164361

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