Question

A new community safety education and outreach intervention is introduced in Biostats-ville, designed to lower the number of motor vehicle accidents occurring in that community. After 8 years of implementation, the average number of reported motor vehicle accidents per month (n=96) is recorded to be 85. Researchers know the general population average number of motor vehicle accidents per month from all communities of a similar size is 87 with a standard deviation of 8.5.

Answer 1

H0: µ = 87
H1: µ ≠ 87

Answer 2

Use the data above examining the research question of interest: "Does Biostats-ville (with the new community safety education and outreach intervention) have a different average number of reported motor vehicle accidents per month than the population average of communities of a similar size?"



Which of the following represents the appropriate decision rule and critical value(s), testing at an alpha level (α) of 0.05.

A. We will reject the null hypothesis at an alpha level of 0.05 if the calculated test statistic is more extreme than the critical values of 2.52.
B. We will reject the null hypothesis at an alpha level of 0.05 if the calculated test statistic is more extreme than the critical values of 2.33 and -2.33.
C. We will reject the null hypothesis at an alpha level of 0.05 if the calculated test statistic is more extreme than the critical values of 1.96 and -1.96.
D. We will reject the null hypothesis at an alpha level of 0.05 if the calculated test statistic is more extreme than the critical value of 2.58.
E. We will reject the null hypothesis at an alpha level of 0.05 if the calculated test statistic is more extreme than the critical values of 1.65 and -1.65. Incorrect
Check

Answer 3

what is this?

Answer 4

I think E but I am not good at math because it is my four ears of since I had taken math class.

Answer 5

I thought it was e to, but it's not right answer

Answer 6

ok

Answer 7

What is the p-value associated with your test statistic? (rounded to the nearest ten thousandth)

*Hint: remember what type of test you are conducting (one-tailed vs. two-tailed).


A. 0.0231
B. 0.1291
C. 0.3401
D. 0.0214
E. 0.3475

Answer 8

The z-statics is -2.30

Answer 9

What is your critical value?

Answer 10

Did you read the hint? *Hint: remember what type of test you are conducting a two-tailed test.

Answer 11

The z statistics is -2.30

Answer 12

So I am looking on the chart, and it gives me .4893 and .0107

Answer 13

but what is the test critical value that the MC answers are referring to?

Answer 14

Where do I find that

Answer 15

@FFASinger This is a question as far as I can understand

Answer 16

Critical values in 1.96 and -1.96

Answer 17

ok, t-tailed 95% test, 1.96. So you have the first answer?

Answer 18

*two tailed

Answer 19

The choices are these though

A. 0.0231
B. 0.1291
C. 0.3401
D. 0.0214
E. 0.3475

Answer 20

What is the steps

Answer 21

-2.3 is right, so 1-98.61 =0.0107.. but it's a two tailed test

Answer 22

So do we multiply it by 2

Answer 23

yep

Answer 24

Is it d

Answer 25

I get .02114, so ya

Answer 26

if the table gives .9893, it works out to 0.0214

Answer 27

Yes it does, Thanks so much:))