please like if it really helps you thank you!!!
-. Twenty-five parts are tested for 15 h. At the end of the test, 3 parts...
1. One hundred (100) parts were tested for 10 hours, and 10 failures occurred during the test. The times when the failures occurred are 1, 3, 6, 2, 3, 6, 8, 9, 2, and 1 hour, respectively. What is the failure rate? 2. Field data have indicated that Unit A has a failure rate of 0.0004 failure per hour. Calculate the reliability of the unit for a 150-hour mission.
1) Twenty consumers tested both products X and Y. Their preferences are listed below. Test the following H0: Consumers prefer brand Y. Use the sign test. Consumer J Brand Preference Consumer J Brand Preference 1 Y 11 Y 2 Y 12 Y 3 X 13 Y 4 Y 14 Y 5 Y 15 X 6 Y 16 X 7 X 17 Y 8 Y 18 Y 9 X 19 Y 10 Y 20 Y Calculated test statistic: Critical value of...
c) W 15. Twenty-five tist wa smok five percent of women of child-bearing age smoke. A scien- anted to test the hypothesis that this is also the proportion of kers in the population of women who suffer ectopic pregnancies. modo so, the scientist chose a random sample of 120 women who had recently suffered an ectopic pregnancy. If 48 of these women turn out to be smokers, what is the p value of the test of the hypothesis Ho: p=...
Question 5 (3 points) Saved A sample of 15 test-tubes tested for the number of times they can be heated on a Bunsen burner before they cracked found that the average of the 15 tested was 1230 and the sample standard deviation was 270 times. Construct a 99% confidence interval for the average number of times all test tubes can be heated on a Bunsen burner. We are 99% confident that the average number of times that test tubes can...
12. Suppose 500 athletes are tested for a drug, one in twenty has used the drug, the test has a 98% specificity and the test has a 100% sensitivity. That is, the probability of a false positive is 2% and there is no chance that the user of the drug will go undetected. Construct a tree diagram showing the probabilities associated with this problem. Write a probability on each branch (6 branches). Multiply the the probabilities along each path and...
12. Suppose 500 athletes are tested for a drug, one in twenty has used the drug, the test has a 98% specificity and the test has a 100% sensitivity. That is, the probability of a false positive is 2% and there is no chance that the user of the drug will go undetected. Construct a tree diagram showing the probabilities associated with this problem. Write a probability on each branch (6 branches). Multiply the the probabilities along each path and...
A.) Survey on the “Leadership Behavior” of 15 managers was conducted. Twenty-five employee respondents were taken. The results are found below using an instrument with how frequently the manager engages in the behavior described by them. 5 Always (A) 4 Often (Oft) 3 Occasionally (Occ) 2 Seldom (S) 1 Never (N) 1. He makes his attitude clear to the group 4 13 3 3 2 2. He is easy to understand. 3 12 6 2 2 3. He schedules the...
Twenty-five $1.000 bonds having a bond rate of 8% per year payable quar- terly are purchased for $22,500 and kept for 5 years. Assume that the bonds are sold immediately after receiving the coupon payments at the end of the 5th year. What must they be sold for in order to earn a 6% effective annual return on the investment?
A runner was tested on a treadmill. During the test, his speed x (in km/h) and his heart rate y were measured. The results are shown in the table. ) 126 138 151 168 185 197 1 13 15 17 19 21 (a) Test for the significance of regression using the analysis of variance with a0.01. Find the P-value for this test. Can you conclude that the model specifies a useful linear relationship between these two variables? We at α-0.01....
Twenty-five-year B-rated bonds of Parker Optical Company were initially issued at a 12 percent yield. After 24 years the bonds have been upgraded to Aa2. Such bonds are currently yielding 10 percent to maturity. Use Table 16-2. Determine the price of the bonds with 1 years remaining to maturity. Price of the bonds Table 16-2 Interest rates and bond prices (face value is $1,000 and annual coupon rate is 12%) A B с D E F G H Rate in...