The null hypothesis is Ho: p1=p2 and alternative is Ha: p1 not = to…
The null hypothesis is Ho: p1=p2 and alternative is Ha: p1 not = to p2 and level of significance is alpha =0.05 My question is if i am using a two tailed z test for this then why am I using the two tailed z hypothesis test?
Which of these examples best represents a simple random sample? a.)…
Which of these examples best represents a simple random sample? a.) Picking out the names of every 10th person from a group of 200 people who drive a car. b.) Selecting every 15th person in a group of 100 volunteers. c.) Using a name generator to pick out 20 names from a group of 100 […]
You are studying the relationship between diets and body weight, as…
You are studying the relationship between diets and body weight, as well as gender. You fed both male and female mice with 4 different diets for 2 months. These mice had the same genetic background and the same body weight before the study. They were of the same age and housed in the same room. […]
In the United States, tire tread depth is measured in 32nds of an…
In the United States, tire tread depth is measured in 32nds of an inch. Car tires typically start out with 10/32 to 11/32 of an inch of tread depth. In most states, a tire is legally worn out when its tread depth reaches 2/32 of an inch. A random sample of four tires provides the […]
Calculate the range, variance, and standard deviation for the…
Calculate the range, variance, and standard deviation for the following data, which represent students’ scores on the SAT after reading the passage. Hint: you might like to use R as a calculator to find the square root of a number. To do this, type sqrt() and within the parentheses, type in the number you want […]
6. A quiz consists of five true-false questions: …
6. A quiz consists of five true-false questions: _________ a. How many elements are in the sample space for answering the quiz? _________ b. If a student answers the test FTFTF, what is the probability that the student answered all five questions correctly?
Sampled from Weight-IAT One sample T confidence interval: μ : Mean…
Sampled from Weight-IAT One sample T confidence interval:μ : Mean of variable 90% confidence interval results: Variable Sample Mean Std. Err. DF L. Limit U. Limit Sample(Age) 31.123257 0.43038785 999 30.414675 31.831839 Are conditions met to estimate the mean age for the population of IAT participants? (Be sure to support your answer as demonstrated throughout […]
Standard for Comparison 1. When different subjects in…
Standard for Comparison 1. When different subjects in different groupsexperience a single condition, it’s abetween-subjects design, explain how it is a between-subjects design. 2. Instead of different subjects in differentgroups experiencing a single condition,each subject experiences every condition, this is a within-subjects design. Explain how it is a within-subjects design. […]
A variable x� is normally distributed with mean 16 and standard…
A variable x� is normally distributed with mean 16 and standard deviation 8.Round your answers to the nearest hundredth as needed. a) Determine the z�-score for x=20�=20.b) Determine the z�-score for x=12�=12.c) What value of x� has a z�-score of 0.630.63?d) What value of x� has a z�-score of −0.1-0.1?e) What value of x� has […]
2) Use the expected value of perfect information (EVPI) to…
2) Use the expected value of perfect information (EVPI) to determine whether the manufacturing company should attempt to obtain a better estimate of the response. Please Justify your answers and explain in brief.
