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Two types of flares are tested and their burning times (in m…

Two types of flares are tested and their burning times (in minutes) are recorded. The summary statistics are given below.Brand X                                   Brand Yn = 45                                      n = 50 x-bar = 20.4 min                     x-bar = 16.1 mins = 1.5 min                               s = 0.9 min A) Use a 0.05 significance level to test the claim that the two samples are from populations with the different means. (14pts) Perform the following steps: (3pts) Step 1: Requirements (2pts) Step 2:                 (3pts) Step 3: Test statistic: (round to 3 decimal places) (3pts) Step 4: Critical value (round to 3 decimal places) (2pts) Step 5: Critical value method  (1pt) Step 6: Conclusion    B) Construct a 95% confidence interval for the difference between the burning mean times of two types of flares using the following steps. (6pts) Perform the following steps:             (1pt) Command:              (2pts) Information for the command:             (1pt) CI: (round to 1 decimal place)             (2pts) Does it appear there is a difference between the two mean times of two types of flares? Explain   C) (2pts) Are the hypothesis test and the confidence interval giving the same result? Explain

A marketing survey involves product recognition in New York…

A marketing survey involves product recognition in New York and California. Of 558 New Yorkers surveyed, 193 knew the product while 196 out of 614 Californians knew the product. At the 0.05 significance level, test the claim that the recognition rates are the same in both states.  Show detailed work for the steps below. (14pts) 1) (2pts) Ho:                 H1:  2) (3pts) Requirements:  3) (3pts) Test statistic (round to 3 decimal places):  4) (3pts) P-value (round to 4 decimal places):  5) (2pts) P-value method:  6) (1pt) Conclusion: 

Find the z-score of each test. Then determine which score co…

Find the z-score of each test. Then determine which score corresponds to the higher relative position. Show work to justify your answer (5pts) Which is better, a score of 92 on a test with a mean of 71 and a standard deviation of 15, or a score of 688 on a test with a mean of 493 and a standard deviation of 150?

Solve the problem.On a multiple choice test with 17 question…

Solve the problem.On a multiple choice test with 17 questions, each question has four possible answers, one of which is correct. For students who guess at all answers, a) Find the mean for the number of correct answers. Round the answer to the nearest tenth.  (3pts) b) Find the standard deviation for the number of correct answers. Round the answer to the nearest tenth.   (3pts)

Find the indicated probability. (3pts) The table below shows…

Find the indicated probability. (3pts) The table below shows the soft drinks preferences of people in three age groups. Cola Root beer Lemon-Lime Under 21 years of age 40 25 20 Between 21 and 40 35 20 30 Over 40 years of age 20 30 35   If one of the 255 subjects is randomly selected, find the probability that the person is over 40 years of age.

Listed below are the amounts of time (in months) that the em…

Listed below are the amounts of time (in months) that the employees of a restaurant have been working at the restaurant. Find the mean.1     5     6      8      11      14       17      46     61     90     99    126    143    167   Write the calculator command or formula for each answer. Round the answer to the nearest tenth if necessary.  a) Find the mean of the data (2pts)  b) Find the standard deviation of the data (2pts)  c) Find the variance of the data (2pts)  d) Find the median of the data (2pts)  e) Find the mid-range of the data (2pts)  f) Find the range of the data (2pts)  g) Find the minimum usual value and the maximum usual value (4pts)  h) Find the amount of time (in months) corresponding to 85 percentile. Interpret the result (4pts)  i) Find the percentile that corresponds to 46 months of working at the restaurant (2pts)