3. Mandy earns money by delivering groceries. SIle $9 on Monday, $7 on Tuesday, $5 on Wednesday, $8 on Thursday, and $12 on Friday. What is the average amount of money Mandy earned per day?

Q: Describe the statistical techniques of Moving Averages and Exponential Smoothing?

A:

Q: How correlation coefficient is Independent of Units of Measurement?

A: Correlation: Correlation a measure which indicates the “go-togetherness” of two data sets. It can be…

Q: What is the z score for test scores of 70 and 90?  TEST SCORES: 50,60,61,63,66,67,73,82,89,92

A: From the provided information, The test scores are 50, 60, 61, 63, 66, 67, 73, 82, 89, 92

Q: The manager of Jerry's Barbershop recently asked 15 customers to punch in a time card when first…

A: It is an important part of statistics. It is widely used.

Q: Describe about the difference between population means>

A: Assuming that we are comparing the difference between two population means which are defined as The…

Q: Explain about why z Test Is Appropriate.

A: The z test is basically a statistical test for testing whether is there any difference between…

Q: Positive or negative correlation? the ciameter of an apple and its weight.

A: There should be positive correlation between diameter of apple and its weight.  Because if we…

Q: Test Statistic p-value= =

A: The sample size for first population is 34, sample mean is 4.9 and sample standard deviation is 1.7.…

Q: How to find the weighted mean of three models

A: The weighted mean is given by the following formula

Q: How to estimate distribution

A: Steps to estimate a distribution1) Split the sample space into bins2) Count the no of samples that…

Q: What does Z-score tell you about someone's score in a class and what does it mean if it is negative…

A: Z-score. Consider the score of someone in a class as x. Z-score: The Z-score measures a particular…

Q: Chi-square is different.

A: What Is a Chi-Square Statistic? A chi-square (χ2) statistic is a measure of the difference between…