Random assignment of subjects to treatments in a statistical experiment guarantees a causal interpretation of the resul

I would really appreciate the help guys! Thanks again ! 1) Use a 0.01 significance level to test the claim that the mean number of words spoken in a day by men is less than that for women...

I need help on number 4 and 5. I done most of the worksheet as it has to be done in order for it to be completed correctly.     For this project you will be seeing the power...

Weights of packages of M&M candies are Normally distributed with the average weight of 0.91g and the standard deviation of 0.15g. If a random sample of 32 packages is selected, what is the...

A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure...

he proportion of hybrids that gets over 61 miles per gallon is

I'm interested in predicting students' graduating GPAs as a function of their (percentage) mark in Sadistics [sic] 2030: Cruel and Unusual Punishment. I've collected data from previous students and...

I need help finding the slope for the best line fit. So, I need the standard deviations of x any y. I am given the parameters of m and b. m=0.259705 b=153.144

Stats question, i thought it was 120 because there would only be 2 ways to make an odd number but some people told me that since there are 2 ones then it would be x3 at the end to make 180. i think...

: On the distribution, label the Z scores -3, -2, 1, 0, 1, 2, and 3. Shade the area between Z = -1 and Z = 1. What percent of the total area under the curve does this shaded region represent?

During a certain week the mean price of gasoline was\$2.7162.716 per gallon. A random sample of 3535 gas stations is drawn from this population. What is the probability that the mean...

which of the following is a valid stastical question?

Use the Central Limit Theorem to find the approximate probability that fewer than 90% of the seeds in a packet of 160 will germinate. Use the normal approximation and round your answer to three decimal...

Pregnant women may be tested for gestational diabetes (high blood glucose levels during pregnancy). A patient is classified as having gestational diabetes if the glucose level is above 140 milligrams...

U and V are mutually exclusive events. P(U) = 0.21 P(V) = 0.33 P(U OR V) =

The authors of the paper "Fudging the Numbers: Distributing Chocolate Influences Student Evaluations of an Undergraduate Course"† carried out a study to see if events unrelated to an undergraduate...

A. What are the possible outcomes?     B. What are the possible values for x? (x= the sum is a prime number)