# Statistics

Richard has been given a 12 question quiz in his history class each question has 4 answers of only one is correct. Since Richard has not attended the…

Richard has been given a 12 question quiz in his history class each question has 4 answers of only one is correct. Since Richard has not attended the class lately he doesn’t know the answers. Assuming that Richard guesses on all 12 question find the probability that he will answer NO MORE than 3 questions […]

A computer Company claims that its Laptop has a battery that will last, on average, more than 3.5 hours on a full charge.

A computer Company claims that its Laptop has a battery that will last, on average, more than 3.5 hours on a full charge. A random sample of 45 of its batteries are selected for a test, and the sample mean is 3.72 hours. Assume that the population standard deviation is 0.7 hours. Test the company’s […]

In a completely randomized experimental design involving five treatments, 13 observations were recorded for each of the five treatments (a total of…

In a completely randomized experimental design involving five treatments, 13 observations were recorded for each of the five treatments (a total of 65 observations). The following information is provided. SSTR = 200 (Sum Square Between Treatments) SST = 800 (Total Sum Square). if, at a 5% level of significance, we want to determine whether or […]

show all the work and calculation step by step plz 1. A researcher conducts an independent -measures research study and obtains t =2.070 with df= 28….

show all the work and calculation step by step plz 1. A researcher conducts an independent -measures research study and obtains t =2.070 with df= 28.a. How many individuals participated in the entire research study?b. Using a two-tailed test with α = .05, is there a significant difference between the two treatment conditions?c. Compute r2 […]