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A survey of 100 clients of pacific gas and electric resulted in the following frequency distribution of monthly charges.
Amount Number
0-49 13
50-99 22
100-149 34
150-199 26
200-249 5
a. Let A be the event that the monthly charges are $150 or more. Find P(A)
b. Let B be the event that the monthly charges are less than $150. Find P(B)
In the Distance problems, the kids are given a Rate (speed) that a vehicle is going, as well as a Time that the vehicle travels, and asked to calculate the Distance travelled. In the Rate problems they are asked to compute Rate from the other two ..
A processor of carrots cuts green top off each carrot, washes the carrots, and inserts six to a package. Twenty packages are inserted in a box for shipment. To test weight of the boxes, a few were checked.
If 16 out of 20 spins just came up black, determine the probability that next spin is going to be red?
What is your initial perception of this information? What are other ways, beyond looking at the p-value alone, you could use to try to interpret what this outcome of r(2398) = -.21 tells us about the relationship between length of time taking drug..
Using t test for significance of slope to determine whether the independent variable is a significant predictor of the dependent variable - Find the sum of the least squares slope and intercept parameter?
Answer all of these questions using R Commander. Include all graphs, outputs from R Commander.
Use a calculator or appropriate computer software to verify that, for the preceding data, xbar = 5.1.
Explain in words general pattern of correlation is statistically important.
Write the null and alternative hypotheses you would use to test the following situation.
In a recent year, 11th grade New York public school students taking an English test produced test scores that were normally distributed with a mean of 81 and a standard deviation of 6. Let x be a random variable that represents a test score.
Describe the given data show a seasonal effect using moving average method. Describe the data which show a seasonal effect.
Standard deviation of 7. At 0.01 significance level, is there more variation in first population?
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