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The following data are the weights in decagrams of 6 packages of grass seeds distributed by a certain company 46.66, 41.45, 47.28, 46.58, 43.89, 42.7
Assume normality in the population.
to. Give a point estimate to estimate the population mean
Answer for part 1
b. Calculate the estimation error with 99.5% confidence.
Answer for part 2
c. Calculate a 95% confidence interval to estimate the population mean of grass seed packet weights distributed by this company.
Of the companies surveyed, only 8 complete and return the questionnaire. Given this scenario, identify possible sources of sampling error, response error, and nonresponse error.
A standard deviation of $12. Three solar homes reported monthly utility bills of $55, $53, and $51. Which of the following statements is true?
in a two-tailed hypothesis test for a mean the critical values were -1.83 and 1.83. if the test value of the mean is
(a) Find a 99% confidence interval for the average car insurance premium and interpret your result. (b) What is the margin of error when using $780 to estimate the population average car insurance premium with 99% confidence? [Hint: (U-L)/2 ]
Find an equation of the least squares regression line. Based on the equation from part (a), what is the predicted final exam score if the average quiz score is 95?
State the multiple regression equation. Interpret the meaning of the slopes in the equation. Predict the salary for a 40-year-old male employee with 5 years of experience.
a school has three tenth grade classes. all three classes took the same physics test. the mean score for the three
q1. mimi was the 5th seed in 2012 umuc tennis open that took place in august. in this tournament she won 83 of her 100
A population is normally distributed with the mean of 100 and a standard deviation of Would it be unusual for mean of sample of 3 to be 115 or more? Why or why not?
Assuming that these times are representative of such races and the differences appeared acceptable for inference, construct and interpret a 95% confidence interval for the mean difference in finishing times.
Two known complications of heart surgery are stroke and heart attack, with a probability of 0.02 and 0.05, respectively
IQ scores above 130 are often called "very superior." What percentage of children had very superior scores in 1932?
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