What is the probability of getting at least 7 items accurate on a 10-item multiple choice test with four alternatives per item? Choices:0.005, О.007, О.009, 0.004, О.001
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What is the
Choices:0.005, О.007, О.009, 0.004, О.001
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- Hand calculated not by any softwareDr. Garcia is curious about her teaching skills. To investigate, her class takes an anatomy quiz. The population average for the anatomy quiz is 15. What can be concluded with a = 0.10? The quiz scores for a random sample from the class are: 16, 17, 18, 16, 19, 15, 18. a) What is the appropriate test statistic? --Select-- b) Population: |---Select--- Sample: ---Select-- c) Obtain/compute the appropriate values to make a decision about Hn. Critical Value = ; Test Statistic = Decision: ---Select--- d) If appropriate, compute the CI. If not appropriate, input "na" for both spaces below. e) Compute the corresponding effect size(s) and indicate magnitude(s). If not appropriate, input and/or select "na" below. d = ; Magnitude: --Select--- ; Magnitude: --Select--- 2 = f) Make an interpretation based on the results. O Quiz scores for the class were significantly higher than the population. O Quiz scores for the class were significantly lower than the population. O Quiz scores from the class…A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 90%confident that his estimate is in error by no more than five percentage points?Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems. n=_ (Round up to the nearest integer.) b) Assume that a recent survey suggests that about 97%of computers use a new operating system. n=_ (Round up to the nearest integer.) c) Does the additional survey information from part (b) have much of an effect on the sample size that is required? A. Yes, using the additional survey information from part (b) dramatically reduces the sample size. B. No, using the additional survey information from part (b) only slightly increases the sample size.…
- Can I use 8 questions and have all 8 completed, thank you.Suppose that the insurance companies randomly surveyed 400 drivers and found that 320 claimed they always buckle up. We are interested in the population proportion of drivers who claim they always buckle up. Use this scenario for the next 4 questions. What is the meaning of p ^ in the context of this scenario? Group of answer choices the proportion of drivers who claim they always buckle up in the POPULATION Neither of these the proportion of drivers who claim they always buckle up in the SAMPLE What is the value of p ^ in the context of this scenario? f you wanted to estimate the true percentage of drivers who claim they always buckle up to within 1% error with 95% confidence, how many drivers would you need to survey? You may use the pilot study as a preliminary estimate of p ^.There are 38 activde telephone area codes in california. You want to choose an SRS of 10 of these area codes for a study of available telephone numbers. Label the codes 01 to 38 and use the simple random sample applet, table b or software to choose your sample.
- Students in an elementary school both boys and girls were asked if they are willing to write a letter to their mother on Mother's Day as an assignment. Out of the 30 boys, only 9 answered "yes" while out of the 45 girls, 39 said that they are willing to write to their mother on Mother's Day. At 99% level of confidence, is there enough evidence to say that the proportion who said "yes" is more for girls than boys? . Но: На: Test Statistic: Test Procedure: Decision Rule: Computation: Decision: Conclusion:1) Randomly pick 5 numbers from the attached link (use a Random number generator - on Google/calculator) and say 1 - 100 and pick 5 numbers, remember, no repeats (kind of like the first discussion) then find the average of the test scores that correlate to it. This is your sample average. List your 5 numbers and write down your average. 2) The actual mean of the scores is 63.52, how off were you? The standard deviation of the data is 25.606 (think about if these are your sample statistics or population parameters). 3) Find your Margin of Error using 95% confidence. I gave you the population standard deviation so think about if it's a z-test or t-test.A reporter writing for a national newspaper claimed that representatives of school districts were falsely reporting their students’ performance on standardized tests. Over 90% of the nation’s school districts report that their students are performing above the national average, and the reporter claimed that isn’t possible. It is possible. a) Provide a list of 10 numbers for which 90% are above the mean. b) What can you infer about the nation’s school districts if 90% of them really are performing above the national average?
