Mathematics, 06.04.2020 17:23 Cooldude3966
A personnel director in a particular state claims that the mean annual income is greater in one of the state's counties(County A) than it is in another county(County B). In country A, a random sample of 13 residents has a mean annual income of 42,200 and a standard deviation of 9000. in county b, a random sample of 11 residents has a mean annual income of 39800 and a standard deviation of 5200. at a=.025, answer parts a-e. assume the population variances are not equal.
a) what are H0 and Ha?
The null hypothesis, h0, is u1or u1=u2 or u1/>u2. The alternateive hypothesis, Ha, is u1>u2 or u1/=u2 or u1
Which hypothesis is the claim?
1) the alternative hypothesis, ha
2) the null hypothesis, h0
b) find the critical value(s)a and identify the rejection region(s).
enter the correct critical value(s):
select the correct rejection region(s) below:
1)t<-t0,t>t0
2)t>t0
3)-t0
4)t<-t0
c)find the standerized test statistic:
t= ?
d) decide whether to reject or fail to reject the null hypothesis.
e)interpert the decision in the context of the original claim:
at 2.5% significance level, there is or there is not enough evidence to support the personnel director's claim?
Answers: 2
Mathematics, 21.06.2019 19:00
The graph shows the charges for a health club in a month. make a function table for the input-output values. writes an equation that can be used to find the total charge y for the number of x classes
Answers: 2
Mathematics, 21.06.2019 21:00
The functions below show the amount of money bella and sweet t had saved after earning money for doing chores. which description best compares the two functions?
Answers: 1
Mathematics, 21.06.2019 21:20
What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?
Answers: 1
A personnel director in a particular state claims that the mean annual income is greater in one of t...
Health, 05.12.2019 04:31
History, 05.12.2019 04:31
Mathematics, 05.12.2019 04:31
Mathematics, 05.12.2019 04:31
Biology, 05.12.2019 04:31
Mathematics, 05.12.2019 04:31
History, 05.12.2019 04:31
Spanish, 05.12.2019 04:31
Mathematics, 05.12.2019 04:31
Biology, 05.12.2019 04:31
English, 05.12.2019 04:31