Question

John believes that two brands of AA batteries last about the same about of time. The...

John believes that two brands of AA batteries last about the same about of time. The following is the length of time (in hours) 10 batteries from each brand lasted:

Brand A 17 19 19 20 20 21 22 23 23 24
Brand B 18 18 18 18 19 19 20 20 20 21

What is H0:

What is Ha:

What is the p-value? Round answer to three decimal places (i.e. 0.123)? Answer

At a level of significance (alpha) of 0.05, what is your decision?

reject the null hypothesis

accept the null hypothesis

fail to reject the null hypothesis

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
A consumer advocate researches the length of life between two brands of refrigerators, Brand A and...
A consumer advocate researches the length of life between two brands of refrigerators, Brand A and Brand B. He collects data (measured in years) on the longevity of 40 refrigerators for Brand A and repeats the sampling for Brand B. These data are measured in years. (You may find it useful to reference the appropriate table: z table or t table) Brand A Brand B Brand A Brand B 25 21 18 19 15 15 24 19 24 15 17...
A consumer advocate researches the length of life between two brands of refrigerators, Brand A and...
A consumer advocate researches the length of life between two brands of refrigerators, Brand A and Brand B. He collects data (measured in years) on the longevity of 40 refrigerators for Brand A and repeats the sampling for Brand B. These data are measured in years. (You may find it useful to reference the appropriate table: z table or t table) Brand A Brand B Brand A Brand B 23 12 21 18 22 15 17 20 18 20 20...
Scientists claim eating chocolate can improve memory. So to test this theory 10 subjects were given...
Scientists claim eating chocolate can improve memory. So to test this theory 10 subjects were given a memory test in which they had to remember 25 items with and without having eaten chocolate. The results were as follows: Subject A B C D E F G H I J Without Chocolate 18 16 21 23 14 15 14 19 20 22 With Chocolate 20 17 23 21 16 18 13 23 22 20 What is the p-value? Round answer to...
Two sample Dependent t-test (or Paired t-test) You want to test your hypothesis below: There is...
Two sample Dependent t-test (or Paired t-test) You want to test your hypothesis below: There is a difference in mean test scores between Exam 1 and Exam 2             Provide your answers in the template below the data set. Exam 1 Exam 2 17 19 18 20 16 22 18 24 12 10 20 25 18 20 20 22 20 21 22 23 20 20 10 10 8 12 12 14 16 12 16 20 18 22 20 24 18...
The quality department at ElectroTech is examining which of two microscope brands (Brand A or Brand...
The quality department at ElectroTech is examining which of two microscope brands (Brand A or Brand B) to purchase. They have hired someone to inspect six circuit boards using both microscopes. Below are the results in terms of the number of defects (e.g., solder voids, misaligned components) found using each microscope. Use Table 2. Circuit Board Number of defects with Brand A Number of defects with Brand B 1              12              14              2              8              9              3              16              16              4              14              12             ...
A market researcher believes that brand perception of one of the company's products may vary between...
A market researcher believes that brand perception of one of the company's products may vary between different groups. After interviewing 278 persons, the following data was compiled. Can we conclude that brand perception is dependent on age? Age Favorable Unfavorable Neutral Total 18-30 50 15 17 82 30-45 45 17 16 78 Over 45 72 20 26 118 Total 167 52 59 278 Step 1 of 8 :  State the null and alternative hypothesis. Answer H0: brand perception and age are...
Nine experts rated two brands of coffee in a​ taste-testing experiment. A rating on a 7...
Nine experts rated two brands of coffee in a​ taste-testing experiment. A rating on a 7 point scale (1 = extremely unpleasing, 7 = extremely pleasing) is given for each of four​ characteristics: taste,​ aroma, richness, and acidity. The accompanying data table contains the ratings accumulated over all four characteristics. Complete parts​ (a) through​ (d) below. EXPERT. BRAND A BRAND B C.C. 23 24 S.E. 24 24 E.G. 19 21 B.I 21 23 C.M. 21 24 C.N 25 26 G.N...
Hw 21 A researcher wants to know if recreational screen time (that is, screen time for...
Hw 21 A researcher wants to know if recreational screen time (that is, screen time for entertainment purposes, rather than for school, work, or communication) has increased or decreased since 2016. In 2016, the mean recreational screen time was 12.9 hours per week. She collects data from 125 individuals, and finds the sample mean recreational screen time to be 14.1 hours per week. The sample standard deviation was 5.25 hours per week. Test her claim that the mean amount of...
#44 A set of solar batteries is used in a research satellite. The satellite can run...
#44 A set of solar batteries is used in a research satellite. The satellite can run on only one battery, but it runs best if more than one battery is used. The variance σ2 of lifetimes of these batteries affects the useful lifetime of the satellite before it goes dead. If the variance is too small, all the batteries will tend to die at once. Why? If the variance is too large, the batteries are simply not dependable. Why? Engineers...
It is believed that nearsightedness affects about 8% of all children. In a random sample of...
It is believed that nearsightedness affects about 8% of all children. In a random sample of 194 children, 21 are nearsighted. (a) Construct hypotheses appropriate for the following question: do these data provide evidence that the 8% value is inaccurate? Ho: p = .08 Ha: p ≠ .08 Ho: p = .08 Ha: p > .08 Ho: p = .08 Ha: p < .08 (b) What proportion of children in this sample are nearsighted? (round to four decimal places) (c)...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT