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A surbey of 200 workers was asked how much they use the internet at work. 150 said they used it within limits, and 30 said they did not use the internet at work.
Construct a 99% confidence interval estimate for the proportion of all workers who did not use the internet at work
If you want to be 95% confidence of estmating the population mean to within a sampling error of +-4 and the standard deviation is assumed to be 10, what sample size is required?
Determine if there is a linear correlation between annual income and the amount of insurance? What is the linear regression line for this data?
Plan the scatter diagram
We wish to create this mean value interval for selling price with 95% confidence level. Find out the best point estimate (average) for selling price. Critical t-value(s) associated with 95% confidence level.
a) What statistical test should be used to analyze these data? b) Identify H0 and Ha for this study. c) Conduct the appropriate analysis d) Should H0 be rejected? What should the researcher conclude?
The mean score of a college entrance test is 500, the standard deviation is 75 and the scores are normally distributed.
As part of its testing program, LongLast tests a sample of 25 batteries. What is the standard error of the mean?
What is the numerical value of the sample proportion p^ ? The P-value is the probability of what event?
Create a 90% confidence interval for proportion of all kernels that would not pop.
Divide your data in half, your first 8 observations and your last 7 observations. Then use ANOVA to test to see if there is a significant difference between the two halves of your data. This list of Webpages that Perform Statistical Calculations h..
The January 17, 1994 issue of Time magazine reported that 58% of adult Americans said yes to the question "If you or your spouse were pregnant, would you want the unborn child tested for genetic defects?"
The point estimate for the difference between the proportions is:
Explain the strength of relationship between the assets?
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