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Citing significant strides in math and science by women of all ethnic backgrounds, the College Broad says that the male-female gap on Scholastic Assessment Test scores continue to narrow among high school students. The average SAT scores for men and women from 1990 to 1994 are shown below:
Verbal
Men
1990 429
1991 426
1992 428
1993 428
1994 425
Women
1990 419
1991 418
1992 419
1993 420
1994 421
Math
1990 499
1991 497
1992 499
1993 502
1994 501
1990 455
1991 453
1992 456
1993 457
1994 460
Please show me how to display in excel each of the four time series on the same axis.
Also, do you see any patterns if yes can you please explain what?
Calculate separate confidence intervals for the numbers of days absent for Clinic A and Clinic B, respectively.
What is the maximum error of estimate for p ?
The following table is based on information taken from the Medical Practice Characteristics section of the Statistical Abstract of the United States
What sample size must you take to be 96% confident that the results will be within $.75 of the true mean cost per call?
Define correlation. Then give an example of a misleading correlation and an example of a meaningful correlation. With this describe the relationship between correlation and causation.
At α = 0.01 level of significance, test the hypothesis that these data can be described by a Poisson pdf.
At the .05 significance level, is the number of units produced on the afternoon shift larger?
Administrators at a university are planning to offer a summer seminar. It costs $3000 to reserve a room, hire an instructor, and bring in the equipment. Assume it costs $25 per student for the administrators to provide the course materials.
What is 95% confidence interval estimate for average number of years served by all Supreme Court justices?
I have computed an analysis of variance for three groups with 10 observations per group. Evaluate the degrees of freedom for the F test
Jim's average delivery time was 38 minutes whereas Alison's average delivery time was 40 minutes. The respective standard deviations were 5 minutes and 4 minutes.
A sample of 81 account balances of a credit company showed an average balance of $1,200 with a sample standard deviation of $126. You want to determine if the mean of all account balances is significantly different from $1,250. Use a .05 level of ..
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