A recent survey at A University found that 21 among a random sample of 58 college students reported using vaping products on a regular basis. Establish a 95% Confidence Interval for the expected proportion of users of vaping products among college students in the entire state of California. What is the "plus four" estimate for the proportion of students who use vaping products (p-tilde)?

0.362

0.339

0.352

0.371

What is the Standard Error?

0.061

0.063

0.067

0.059

What is the Margin of Error?

0.120

0.10

0.08

0.115

The 95% Confidence Interval for p ranges from?

(0.26, 0.47)

(0.25, 0.53)

(0.24, 0.47)

(0.25, 0.49)

What should the sample size be if you wanted the Margin of Error to be 2%?

2243

2242

2241

2240

Compared with a national survey conducted in 2014 where 19% of college students engaged in vaping, is there a significant difference in vaping between Students and the national average? Recall that 21 among a random sample of 58 students reported using vaping products on a regular basis. Use an a-level of 0.05 (5%)

The Hypothesis Statements are:

Ho: p = 0.19; H_A: p # 0.19

Ho: p = 0.36; H_A: p # 0.36

Ho: p = 0.19; H_A: p > 0.19

Ho: RR=1; H_A: RR#1

What is the Standard Error?

0.050

0.052

0.054

0.057

What is?[Hint: this refers to the population]

0.360

0.400

0.362

0.371

What is the Z-stat value?

3.308

3.306

3.104

2.859

What is the corresponding p-value?

0.016

0.008

0.065

0.0008

Do you reject or not reject H₀?

Reject

Not reject

Is there a significant difference between the proportion of vapers and that in the general population? If so, why? If not, why not?

No, because the p-value is less than alpha.

No, because the p-value is less than 0.19

Yes, because the p-value is less than alpha

We must first calculate the 95% CI for the RR to determine significance.