Math 53 Study guides, Class notes & Summaries

1. Question: Classify each of the following as nominal, ordinal, interval, or ratio data. 2. Question: The activity or the process of collecting the data on the population is called . 3. Question: A company wants to learn the customers’ purchase habits of buying certain products. This company did a survey about a random 1000 customers, who were asked about the times they purchased the certain products within one month. Then what is the data in this example: 4. Question: Researchers often wi...

MATH 533 Applied Managerial Statistics: Course Project Part C 2023. The correlation coefficient between sales and calls is calculated as 0 .871. This is positive correlation coefficient; it means there is positive relationship between sales and calls. If the number of calls are increased then sales will also be increased and vice versa. The calculated correlation shows strong positive correlation. Correlation: Sales, Calls (Appendix I)- Minitab Result Pearson correlation of Sales and Calls ...

of a statistic (mean, proportion, or standard deviation, etc.). There is always a risk ofsampling error associated with an estimate. Confidence intervals are useful forestablishing bounds for estimating, in particular, the mean or standard deviation, butalso regression coefficients, proportions, frequency rates, and differences betweenpopulations. Also, a 95% confidence interval indicates that for 19 out of 20 samplestakenfromthesamepopulation,theseintervalswillcontaintheparameterstudied,withama...

Keller MATH 533 Course Project Part B, Hypothesis Testing. Hypotheses testing involves the testing of the null hypothesis and the alternative hypothesis. When testing the hypothesis either the null hypothesis or the alternative hypotheses is rejected. The value to a company knowing to accept or reject a hypothesis will aid in the decision making process. Information derived from hypothesis testing can aid in more timely decision. Requirement A: The average (mean) sales per week exceeds 41.5...

MATH 120: INTRODCTION TO STATISTICS EXAM COMPILATION TESTBANK/ALL EXAMS WITH CORRECT DETAILED ANSWERS/100% VERIFIED/LATEST UPDATE /A+ GRADE Contents MATH 120: WEEK 1 EXAM 1 MATH 120 Quiz 1 Week 2 6 MATH 120: WEEK 2 EXAM 12 MATH 120: WEEK 3 EXAM 19 MATH 120: WEEK 3 EXAM 2 28 MATH 120 PRACTICE EXAM 4 32 MATH 120: WEEK 4 EXAM 41 MATH 120: WEEK 5 QUIZ 43 MATH 120: WEEK 6 EXAM 46 MATH 120: Week 7 Quiz 51 MATH 120: WEEK 7 EXAM 53 MATH 1201 FINAL EXAM 61 Math 120: Mini project QUIZ 67 ...

A company makes men's button-up dress shirts and is considering changes to itsdesign.Howmightthecompanygoaboutfindingagoodsampleofindividuals?Thesedecisions would include method of sampling, location of sampling, population toconsider,and numberin sample,inaddition toanyotherconsiderations.

Consider when businesses might use confidence intervals to estimate values, such asin sales projections, marketing results, and so forth. Describe a business decision thatcould be helped with confidence intervals. Be specific! Then create a problem withnumbers from which another student could calculate a confidence interval and make adecision.

1. Scores on a certain exam are normally distributed with a mean of 90 and a variance of 25. What is th 2. Scores on a certain exam are normally distributed with a mean of 90 and a variance of 25. What is th 3. Which one of the following is not a characteristic of a normal distribution? X is normally distributed with mean 50 and standard deviation 4, what is P(45 < X < 58) ? 7. Suppose X is normally distributed with mean 20 and standard deviation 4, find the value x0 such that 9. I...

Consider when businesses might use confidence intervals to estimate values, such asin sales projections, marketing results, and so forth. Describe a business decision thatcould be helped with confidence intervals. Be specific! Then create a problem withnumbers from which another student could calculate a confidence interval and make adecision.

Week2:ChangingProbabilitiesintoConditionalProbabilities Describe a situationwhere youseeprobabilities or might see probabilities.Thenpresent this probability as a conditional probability. In response, other students canmake assumptions about the conditional probability table that could accompany such asituationandposeaquestionforaspecificprobability.Finally,athirdstudentcanshowthe work of solving the probability. Your first post should start a new probabilitydiscussiononly!