Question

A company provides portable walkie-talkies to construction crews. They use batteries that last, on average, 62...

  1. A company provides portable walkie-talkies to construction crews. They use batteries that last, on average, 62 hours of continuous use. The purchasing manager receives a brochure advertising a new brand of batteries that claims it has more longevity than the brand currently in use. To test this, the new brand is installed in 10 randomly selected radios. Here are the results for the lifetime of the batteries (in hours):

55 61 68 72 70 59 70 64 60 67

Is there sufficient evidence to conclude that the advertising for the is correct in claiming that the new batteries have a longer lifetime? Conduct hypothesis test using = 0.05 (8 Points – 2 Points for Error Question).

H0: _____________ Ha: _____________ =

Calculate test statistic:

P-value:

State your Conclusion:

What would it mean if you made a TYPE I Error in the context of this scenario?

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A company claims that its batteries last an average of 100 hours under normal use. There...
A company claims that its batteries last an average of 100 hours under normal use. There have been several complaints that the batteries don't last that long, so an independent testing agency is engaged to test them. The population standard deviation is known to be 10 hours. For the 25 batteries they tested, the mean lifetime was 96 hours. If the true population mean is 100 hours, you have made a Type I Error      Type II error   Correct decision        If...
A battery company claims that its batteries last an average of 100 hours under normal use....
A battery company claims that its batteries last an average of 100 hours under normal use. After several complaints that the batteries do not last this long, an independent testing laboratory decided to test the company’s claim with a random sample of 42 batteries. The data from the 42 batteries appeared to be unimodal and symmetric with a mean 97 hours and a standard deviation of 12 hours. Is this evidence that the company’s claim is false and these batteries...
Exercise 16.037 {Exercise 16.37} The following exercises require the use of a computer and software. Use...
Exercise 16.037 {Exercise 16.37} The following exercises require the use of a computer and software. Use a 5% significance level for all tests of hypotheses. Dataset: Income Food 53 188.24 47 304.89 59 304.99 44 283.99 87 316.21 56 263.32 62 315.87 60 201.52 70 295.5 85 318.53 63 278.78 57 254.34 59 253.79 64 310.97 45 215.79 62 248.34 63 299.66 55 220.72 77 319.58 52 280.96 72 259.73 64 254.5 68 181.99 54 256.8 63 258.54 57 203.91...
Compute each of the following probabilities. Label each problem clearly and show all your work. Use...
Compute each of the following probabilities. Label each problem clearly and show all your work. Use the numbers you computed in earlier parts of the project based on the class data set. Problem 1: Suppose all of the Skittles in the class data set are combined into one large bowl and you are going to randomly select one Skittle. (a) What is the probability that you select a green Skittle? (4 points) (b) What is the probability that you select...
Student What is your height in inches? What is your weight in pounds? What is your...
Student What is your height in inches? What is your weight in pounds? What is your cumulative Grade Point Average (GPA) at FTCC or your primary college? How many hours do you sleep each night? 1 67 100 4 7 2 62 105 4 5 3 72 120 4 8 4 61 125 4 7 5 56 105 3.7 6 6 61 120 4 7 7 65 172 3.8 7 8 72 235 3.22 5 9 63 135 4 6...
StudentNO Gender Height in inchese 1 Female 63 2 Female 64.0 3 Male 67.0 4 Female...
StudentNO Gender Height in inchese 1 Female 63 2 Female 64.0 3 Male 67.0 4 Female 59 5 Male 60 6 Female 61 7 Female 62 8 Female 63 9 Female 63 10 Female 64 11 Male 64 12 Female 65 13 Female 65 14 Female 65 15 Female 65 16 Female 66 17 Female 66 18 Male 67 19 Male 67 20 Male 67 21 Female 67 22 Male 67 23 Male 67 24 Female 67.5 25 Male 68...
A large buyer of household batteries wants to decide which of two equally priced brands to...
A large buyer of household batteries wants to decide which of two equally priced brands to purchase. To do this, he takes a random sample of 100 batteries of each brand. The lifetimes, measured in hours, of the batteries are recorded in the file P09_16.xlsx. Before testing for the difference between the mean lifetimes of these two batteries, he must first determine whether the underlying population variances are equal. a. Perform a test for equal population variances. Report a p-value...
In what follows use any of the following tests/procedures: Regression, multiple regressions, confidence intervals, one-sided t-test...
In what follows use any of the following tests/procedures: Regression, multiple regressions, confidence intervals, one-sided t-test or two-sided t-test. All the procedures should be done with 5% P-value or 95% confidence interval. Upload the data HeartRate_Exercise. These data are based on 45 randomly chosen high school students. SETUP: Is it reasonable to claim that students who exercise more have lower heart beat rate at rest. Given the data your job is to confirm or disprove this claim. 5. What test/procedure...
An administrator said that he believes that 50% of all students have more than 60 credit...
An administrator said that he believes that 50% of all students have more than 60 credit hours. Use the data found in the column labeled “More than 60 credit hours attained” to answer this question. “No” means that the student has not attained more than 60 credit hours. “Yes” means that the student has attained more than 60 credit hours. a. Write the claim in symbolic form b. Write the null and alternative hypothesis in symbolic form c. State the...
The Student Government Association is interested in an estimate of the mean number of hours students...
The Student Government Association is interested in an estimate of the mean number of hours students work per week. They take a simple random sample of 89 students. The data they collected can be found in the column labeled “Number of hours worked per week”. Use the sample data to construct a 95% confidence interval for the mean number of hours worked. Write one or two sentences to communicate to the Student Government Association the estimate and the margin of...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT