A company with a fleet of 150 cars found that the emission systems of 7 out of 22 they tested failed to meet pollution control guidelines. Is this strong evidence that more than 20% of the fleet might be out of compliance? You are
A skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO is less than 5%. the type of alternative hypothesis is: left-tailed right-tailed or two-tailed Is this right-tailed?
so we will be having a quiz about hypotheses testing and i cant still figure out the difference between the null hypothesis with alternative hypothesis. PLEASE HELP ME DIFFERENTIATE THE TWO. And i still get confused between one
(1) Jack had been without a car since Monday. (2) The car needed a new battery, and Jack was broke. (3) Although he was embarrassed, Jack called his mother. (4) He felt he had no choice. (5) Fortunately, his mom was happy to help
A single card is selected from an ordinary deck of cards. The sample space is shown in the following figure. Find the following probabilities. (Enter the answers either as fractions or as decimals rounded to three places.) P(five
Which option most accurately describes the origins and principles of the humanist philosophy? the humanist philosophy originated in England and spread throughout the British Isles, emphasizing chivalry and a feudal society the
Would this be 2 tailed test or a 1 tailed test? " Do dog owners have fewer doctor visits than control subjects?" I thought it was a 2 tailed test. Help? * For an independent group t test, when you are instructed to use a 1 tailed
According to a study by the Centers for Disease Control, the national mean hospital stay after childbirth is 2.1 days. Reviewing records at her own hospital, a hospital administrator calculates that the mean hospital stay for a
Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of
Use a joining word to combine the simple sentences to make a compound sentence. 1/ Jack and the Beanstalk" is a fable. It is very famous. 2/ the beanstalk grew into the sky . Jack climbed it anyway. 3/ Jack climbed the beanstalk .