Sophia statistics Study guides, Class notes & Summaries

Sophia Statistics Unit 4 Milestone, questions/Answers/Rationale, Latest Summer 2023

STATISTICS MISC - SOPHIA STATISTICS UNIT 5 – MILESTONE 5 LATEST 2023 STATISTICS MISC UNIT 5– MILESTONE 5 You passed this Milestone Joe is measuring the widths of doors he bought to install in an apartment complex. He measured 72 doors and found a mean width of 36.1 inches with a standard deviation of 0.3 inches. To test if the doors differ significantly from the standard industry width of 36 inches, he computes a z-statistic. What is the value of Joe's z-test statistic? 2.83 -1.81...

STATISTICS MISC - SOPHIA STATISTICS UNIT 5 – MILESTONE 5 LATEST 2023 If we first note the denominator of Then, getting the z-score we can note it is This tells us that 36.1 is 2.83 standard deviations above the value of 36. Note that when you round some values you may get slightly different results, but the results should be relatively close to this final calculated value. CONCEPT Z-Test for Population Means 2 Emile has calculated a one-tailed z-statistic of -1.97 and wants ...

Sophia Statistics Unit 5 Milestone practice questions DETAILED ANSWER KEY Questions and Answers (latest Update 2023), 100% Correct and Complete, Highly Recommended, Download to Score A+ Which of the following is an example of a parameter? Half of the receipts at the coffee shop include web address for giving feedback. 9047 out of 531,310 citizens voted in the special election for city council. 3.5% of the restaurant goers are given a survey to fill out. All of the members of the community w...

Sophia Statistics Unit 2 Milestone practice questions DETAILED ANSWER KEY Questions and Answers (latest Update 2023), 100% Correct and Complete, Highly Recommended, Download to Score A+ The manager went over the sales of mobile phones at the store and found that the mean sale was 45, with a standard deviation of 4. On a particular day, 52 mobile phones were sold. What is the z-score of the sale of mobile phones on that day? -28 28 1.75 -1.75 RATIONALE Recall that the z-score can be cal...

Sophia Statistics Unit 3 Milestone practice questions DETAILED ANSWER KEY Questions and Answers (latest Update 2023), 100% Correct and Complete, Highly Recommended, Download to Score A+ Which of the following is a property of binomial distributions? The sum of the probabilities of successes and failures is always 1. All trials are dependent. The expected value is equal to the number of successes in the experiment. There are exactly three possible outcomes for each trial. RATIONALE Recall ...

Sophia Introduction to Statistics Unit 4 Milestone 4,.pdf

Sophia Statistics Unit 5 Milestone 5,..pdf

Sophia Statistics Unit 1 Milestone practice questions DETAILED ANSWER KEY Questions and Answers (latest Update 2023), 100% Correct and Complete, Highly Recommended, Download to Score A+ Jenae noticed that many of her co-workers would opt for the coffee that appeared to be most recently brewed, regardless of the flavor of the coffee offered. This leads her to believe that what she was witnessing was not really representative of everyone's true flavor preferences. She adapted her experimenta...

Sophia Statistics STATS UNIT 5 Milestone (Complete) Latest Review 2023 Practice Questions and Answers, 100% Correct with Explanations, Highly Recommended, Download to Score A+ 1. Adam tabulated the values for the average speeds on each day of his road trip as 60.5, 63.2, 54.7, 51.6, 72.3, 70.7, 67.2, and 65.4 mph. The sample standard deviation is 7.309. Adam reads that the average speed that cars drive on the highway is 65 mph. The t-test statistic for a two-sided test would be __________. ...