The pass result of 50 students who took up a test is given below : Marks No. of students 4 5 10 6. 9. 7 6 8 4 9 3 8 If the average marks of all the 50 students were 516, find out th: average marks of the students who failed,

In some 4.0 grading systems, a student's grade point aversge (GPA) is calculated by assigning letter grades the following numerical values. (See attachment) Use this grading system to find this student's GPA. Round to the nearest hundredth. Tessa's cumulative GPA for 3 semesters was 3.18 for 46 course units. Her fourth semester GPA was 3.72 for 12 course units. What is Tessa's cumulative GPA for all 4 semesters?

 A national forest service wanted to estimate the number of deer in a particular national park. They cotton tag 71 deer and release him back into the park. Later they selected a sample of 272 deer. Of the 272 dear, 17 were tagged, assuming that the portion of tag deer and the sample holds for all deer in the forest, what is the best estimate of the number of deer in the park? 

What percent of students earned a passing grade of 70 or higher? TEST SCORES: 50,60,61,63,66,67,73,82,89,92

Is the average time to complete an obstacle course longer when a patch is placed over the right eye than when a patch is placed over the left eye? Eight randomly selected volunteers first completed an obstacle course with a patch over one eye and then completed an equally difficult obstacle course with a patch over the other eye. The completion times are shown below. "Left" means the patch was placed over the left eye and "Right" means the patch was placed over the right eye. Right 40 46 42 45 40 48 42 42 Left 38 46 41 45 36 45 39 43 Assume a Normal distribution.  What can be concluded at the the αα = 0.05 level of significance level of significance? For this study, we should use        The null and alternative hypotheses would be:        H0:H0:                  (please enter a decimal)     Ha:Ha:                  (Please enter a decimal) The test statistic     =  (please show your answer to 3 decimal places.) The p-value =  (Please show your answer to 4 decimal places.) The…

A sample of 150 married women determined that 127 are happy in their marriage. A sample of 150 married men determined that 76% are happy in their marriage.   If you plan to test if the percent of married women who are happy in their marriage is greater then the percent of married men who are happy in their marriage- Answer the following: What is the test statistic? Write to 4 decimal places.

A home pregnancy test was given to women, then pregnancy was verified through blood tests. The following table shows the home pregnancy test results.   Positive Negative Total Pregnant 54 9 63 Not Pregnant 4 55 59 Total 58 64 122 Round your answers to the nearest thousandth.PP(positive∣∣pregnant) = PP(pregnant∣∣positive) = PP(negative∣∣pregnant) = PP(not pregnant∣∣negative) =

The scores on a statewide math exam were normally distributed with ?=74 and ?=8. What proportion of test-takers had a grade between 66 and 88 on the exam?

The 95% interval for a statistics test was given by 55 + 7. What is the lower value for the interval? O a. 62 O b. 48 O c. 55 O d. 7

Winston has just gone grocery shopping. The mean cost for each item in his bag was $3.48. He bought a total of 9 items, and the prices of 8 of those items are listed below: $2.75,$4.06,$3.16,$3.92,$4.29,$2.77,$3.01,$4.57 Determine the price of the 9th item in his bag.