express the null hypothesis and the alternate hypothesis in symbolic form. use the correct symbol for the indicated parameter :
the principal of a middle school claims that test scores of the seventh-grade at her school vary less than the test scores of seventh- graders at the neighboring...
form a conclusion about statistical significance. Do not make any formal calculations. Either use the results provided or make subjective judgments about the results.
a manufacturer of laptop computers claims that only 1% of their computers are defective. In a sample of 600 computers, it was...
a class has 9 students who are to be assigned seating by lot. What is the probability that students will be arranged in order from shortest to tallest? (assume that no two stusents are the same height.)
at a United Nations meeting, a group of 15 delegates meet to discuss an international peace treaty. If all of the delegates shake hands with one another, how many handshakes are exchanged?
In a homicide case, 7 different witnesses picked the same man from a lineup. The line up contained 5 men. If the identification were made by random guesses, find the probability that all 7 witnesses would pick the same person.
A study conducted at a certain college shows that 55% of the school's graduates find a job in their chosen field within a year after graduation. Find the probability that among 7 randomly selected graduates, at least one finds a job in his or her chosen field within a year of graduating
A IRS auditor randomly selects 3 tax returns from 45 returns of which 15 contain errors. What is the probability that she selects none of those containing errors? Round to four decimal places.
I am trying to get help on these specific problems that I am being asked on a worksheet that is all I am not asking to get taught it again since I JUST NEED HELP SOLVING THE QUESTIONS IN ORDER TO OBTAIN MORE PRACTICE WITH THESE TYPE OF PROBLEMS
from a group of 6 men and 10 women, a committee of 4 is selected at random. write your answer as a fully reduced fraction.
a. find P(at least 1 woman).
b. find P(0 men)
c.Find P(all men or all women).
a coin purse contains 10 pennies, 4 dimes, and 4 quarters. four coins are...
4)
a card is drawn from a standard deck with 52 cards. Find P(spade or face card or 3 or club). Write your answer as a fully reduced fraction?
5)
five cards are drawn from a standard deck with 52 cards without replacement. find the probability that the first card is a heart, the second is a...
Captain Jane Way is a charter plane pilot and has trips scheduled to Seattle,Dallas, San Francisco, New York, Portland, Omaha, Miami, Honolulu, Arlington, Los Angeles, and Chicago. How many ways can the captain arrage her schedule?
a student earned grades of A, C, A, A, and B. Those courses had these corresponding numbers. of credit hours:1,6,3,1,3. The grading system assigns quality points to letter grades as follows: A=4, B=3, C=2, D=1, and F=0. Compute the grade point average (GPA) and round the result to two decimal places