Question

In a random sample of 62 juniors, 34 said they would vote for Jennifer as student body president. In a random sample of 77 seniors, 48 said they would vote for Jennifer. Does this indicate that the proportion of seniors who would vote for Jennifer is higher than the proportion of juniors? Use α=0.05

(A) State the null and alternate hypotheses and the level of significance. Is the test left-tailed, right-tailed, or two-tailed?

(B) Identify the appropriate sampling distribution: the standard normal or the Student’s t.

(C) What is the value of the sample test statistic?

(D) Find or estimate the P-value.

(E) Based on your answers for parts (a) through (d), will you reject or fail to reject the null hypothesis?

Answer #1

In a random sample of 62 students, 34 said they would vote for
Jennifer as student body president. In another random sample of 77
students, 48 said they would vote for Kevin as student body
President. Using α = 0.05 level of significance to test whether the
population of all students, Kevin has a higher proportion of
votes.
a) What is the level of significance? State the null and
alternate hypotheses.
b) What sampling distribution will you use? What assumptions...

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college who will vote for Jennifer. Find a point estimate for p.
Round your answer to the nearest hundredth.
b.Find a 90% confidence interval for p. Round your answer to
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c.Interpret the meaning of the confidence...

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average? Use a 5% level of significance. Assume x is
normally distributed.
(A) State the null and alternate hypotheses and the level of
significance. Is the...

Recently the national average yield on municipal bonds has been
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5% level of significance. Assume x is normally distributed. a.
State the null and alternate hypotheses and the level of
significance. Is the...

A random sample of 337 college students was asked whether or not
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The average annual salary of employees at Wintertime
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1)
The body weight of a healthy 3-month-old colt should be about
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H0?
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Would you favor spending more federal tax money on the arts? Of
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r1 = 56 responded yes. Another random sample of
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A random sample of ?=1000 registered voters and found that 520
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Consider testing
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??:?>.50
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