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Q1) You are given sample mean and sample standard deviation. Use this information to create 90% and 95% confidence intervals for population mean. which interval is wider? If convenient, use technology to create the confidence intervals
A random sample of 33 eight - ounce serving of different juice drinks has mean of 98.8 calories and standard deviation of 49.3 calories.
90% confidence interval is...
95% confidence interval is...
Which interval is wider?
a) 90% confidence interval is...
b) 95% confidence interval is...
Why do we have so many several measures of central tendency? Are all really essential or do they essentially give same information? Why is measure of variation a essential accompaniment to measure of central tendency? Use examples in your discussion.
What happens to the expected return and standard deviation of returns of the portfolio in Part a if the following conditions exist?
Use alpha level. 05 to compute and interpret Pearson's r and to test whether it is important (using all your steps for hypothesis test).
The margin of error for a 95% confidence interval estimate for the proportion of all students with cell phones is
Using the .05 level of significance: a) Is there a difference among types of gasoline? b) Is there a difference in the cars?
By using.02 level of significance, carry out a 5-step hypothesis testing procedure to find out if new processes considerably reduced the wait time.
Forecast the number of deliveries utilizing exponential smoothing constant for different values also compare it. A hospital records the number of floral deliveries its patients receive every day.
What is Excel formula in B9 giving first value of coefficient in the objective function?
A survey of the residents of a new subdivision on why they happened to select that area in which to live. You also wish to secure some information about what they like and do not like about life in the subdivision.
What is the probability that a cereal would both high calorie and high fiber? In other words, what is P (high calorie and high fiber)?
Evaluate the standard deviation - use the conservative value for the degrees of freedom, Assume the two groups are independent and the data are approximately Normal. Let µ 1 and µ 2 represent the mean heart rates we would observe for the entire po..
Calculate the mean and standard deviation of the following data sets, then produce a five number summary and box plot of data.
At a = 0.05, can you reject claim that at least 52% of adults are more probable to purchase a product when there are free samples?
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