Question

In order to determine whether or not there is a significant difference between the mean hourly...

In order to determine whether or not there is a significant difference between the mean hourly wages paid by two companies (of the same industry), the following data have been accumulated.

Company A

Company B

Sample size

80

60

Sample mean

$16.75

$16.25

Population standard deviation

$1.00

$.95

​

At the 5% level of significance, the null hypothesis

a.

should be rejected.

b.

should not be rejected.

c.

should be revised.

d.

should not be tested.
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
In order to determine whether or not there is a significant difference between the hourly wages...
In order to determine whether or not there is a significant difference between the hourly wages of two companies, the following data have been accumulated. Company A Company B Sample size 180 160 Sample mean $16.75 $16.25 Population standard deviation $1.50 $1.95 Refer to Exhibit 5. At 95% confidence level, the null hypothesis
To test whether or not there is a difference between treatments A, B, and C, a...
To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments. You are given the results below Treatment Observations A 20 30 25 33 B 22 26 20 28 C 40 30 28 22 The mean square due to treatments (MSTR) equals The null hypothesis for this ANOVA problem is The null hypothesis is to be tested at the 1% level of significance....
The management of ABC Ltd. wants to determine whether there is a significant difference in the...
The management of ABC Ltd. wants to determine whether there is a significant difference in the average length of time (in minutes) employees spent on social media every day within its two regions. The following data has been accumulated for this test: Region 1 Region 2 Sample Mean 22.5 16.4 Sample Standard Deviation 10.5 12.3 Sample Size 44 43 1.   What are the null and alternative hypothesis if we want to determine whether the average length of time employees spent on...
Consider the following ANOVA table. ​ Source Sum Degrees Mean F of Variation of Squares of...
Consider the following ANOVA table. ​ Source Sum Degrees Mean F of Variation of Squares of Freedom Square Between Treatments 2073.6 4 Between Blocks 6000 5 1200 Error 20 288 Total 29 The test statistic to test the null hypothesis equals The null hypothesis is to be tested at the 1% level of significance. The null hypothesis should a. be rejected. b. not be rejected. c. be revised. d. not be tested. The null hypothesis is to be tested at...
10. If we find that the difference between the sample mean is a rare event, we...
10. If we find that the difference between the sample mean is a rare event, we will conclude that: the null hypothesis is accepted. the alternative hypothesis is rejected. the null hypothesis is rejected. there is no difference between the populations.
a union of restaurant and food service workers would like to estimate this year's mean hourly...
a union of restaurant and food service workers would like to estimate this year's mean hourly wage meu for Food Service workers in the US. last year's meu hourly wage was $8.16 and there is reason to believe that this year's value is greater than last year's. the Union decides to do a statistical test to see if it can be concluded that the men has increased. the union choose a random sample of 50 wages from this year. suppose...
We are interested in determining whether the variances of the sales at two music stores (A...
We are interested in determining whether the variances of the sales at two music stores (A and B) are equal. A sample of 25 days of sales at store A has a sample standard deviation of 30, while a sample of 16 days of sales from store B has a sample standard deviation of 20. At 95% confidence, the null hypothesis _____. a. should be rejected b. should not be rejected c. should be revised d. None of these answers...
To determine whether training in a series of workshops on creative thinking increases IQ scores, a...
To determine whether training in a series of workshops on creative thinking increases IQ scores, a total of 70 students are randomly divided into treatment and control groups of 35 each. After two months of training, the sample mean IQ (–X1) for the treatment group equals 110, and the sample mean IQ (–X2) for the control group equals 108. The estimated standard error equals 1.80. Question: Steps: Calculations or Logic: Answer: Using t , test the null hypothesis at the...
1. A null hypothesis states that there is A. No significant difference between a population parameter...
1. A null hypothesis states that there is A. No significant difference between a population parameter and sample statistic. B. A significant difference between a population parameter and sample statistic. C. The difference between the population parameter and sample statistic is significant and can be attributed to sampling error. D. The difference between the population parameter and sample statistic is insignificant and cannot be attributed to sampling error. E. None of the above 2. An alternative hypothesis states that there...
A researcher is interested in whether there is a significant difference between the mean age of...
A researcher is interested in whether there is a significant difference between the mean age of marriage across three racial groups. Based on the data below, answer these questions. Race N Mean Black 118 21.57 White 882 24.59 Other 120 28.39 All Groups 1,120 24.68 1. Calculate the value of the between group sum of squares (SSB, 20 pts). Race Y bar for each group Total mean Group mean – Total mean Square of the difference The number of cases...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT