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Question 1: Each of the following proportions is based on survey responses. For each proportion, use the ±2 rule of thumb to determine the 95 percent confidence interval.
A. When asked if they are satisfied with their financial situation, .29 said "very satisfied" (n = 121).
B. When asked if people can be trusted, .32 said "yes" (n = 100).
C. Of the individuals in a survey, .40 still live in the same city they lived in when they were 16 years of age (n = 225)
Let variable X represents the improvement in time for each assembly line worker. Let μ represents the average improvement in time for the population. Has the training improved the time required on the job? Please test the hypothesis use α=0.05 ..
Your write-up of this experiment should include your work to determine the n, your methodology, your record of the experiment, your confidence interval, your interpretation of the confidence interval, your formal hypothesis test and your comments ..
The expected value is within one standard deviation of themean(so you must calculate both the standard deviation and expected value for your game).
Compute the mean price of the stock, what is the median price and compute the variance and standard deviation
Find the equation of the regression line for the given data. What is the predicted value of Y when X = -2? What is the predicted value of Y and find the correlation coefficient between X and Y. Is there a weak or strong, positive or negative corr..
1. unemploymenta. suppose that 98 million people work and 5 million seek work. what is the unemployment rate?b. now
Write down the regression equation and state the R-squared value and the standard error and explain what they mean with respect to the data.
question 1nbsp calculating a z-score and graphing a box plotnbsplook at the data under dietarysupp.nbsp the table gives
Stat-101, questions from SPSS or Stat-101, Consider the way the table is arranged. If the hypothesis is correct, should we find a positive sign on Somers' dyx or a negative Signon Somers' dyx? Explain how you know.
Calculate the standard deviation for the sample mean
Consider the situations and comment on whether the sample results might cause concern about the quality of the process.
Festival Histogram: Beginning with in the text on spotting outliers, correct the type in the data as directed - create a separate histogram for each day, Day1, Day2, and Day3, using the hygiene variable for all three days. Include the normal curve
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