State the null hypothesis Ho and the alternative hypothesis Ha that would be used for a...
1. State the null hypothesis Ho and the alternative hypothesis Ha that would be used for a hypothesis test related to each of the following statements. a.) The average GPA of students enrolled in an AP Statistics class is higher than 3.5. (2 points) b.) The average retirement age of professional bull riders is less than 30 years. (2 points) c.) The mean life of incandescent bulbs is at least 750 hrs. (2 points) d.) The mean weight of college...
(6 points) For each statement, select the correct null hypothesis, Ho, and alternative hypothesis, Ha, in symbolic form. (a) According to the Merck Veterinary Manual, the average resting heart rate for a certain type of sheep dog is 115 beats per minute (bpm). A Montana farmer notices his aging sheep doa has been acting more lethargic than usual and wonders if her heart rate is slowing. He measures her heart rate on 15 occasions and finds a sample mean heart...
State the null hypothesis H 0 and alternative hypothesis H a Ha in each of the following cases. (a) A university gives credit in first-year calculus to students who pass a placement test. The mathematics department wants to know if students who get credit in this way differ in their success with second-year calculus. Scores in second-year calculus are scaled so the average each year is equivalent to a 79. This year 21 students who took second-year calculus passed the...
For each of the problems below perform an hypothesis test. State the null and alternative hypothesis, the p-value and your conclusion in context of the problem. Perform each test at a .05 significance. 1. A manufacturer of a plasticised line used in home-assembly mobiles advertises that their product has an average tensile strength of 30 kilograms (this is a measure of how strong the product is). You took a sample of 144 sections of the line and tested them. The...
Hypothesis Problems For the following hypothesis tests: a. State the null (Ho) and alternative (Hi) hypotheses b. State the type of test (right-tailed, left-tailed, or two-tailed) c. State the multiplier for an a (level of significance) of .05. The Chamber of Commerce states that only 15% of Boston tourists stay more than 2 days. A new chamber employee feels that the percentage staying more than 2 days is greater than 15%, and plans to sample a set of tourists to...
1-4 1. State the null hypothesis, alternative hypothesis and identify the claim for each conjecture a. A medical researcher is interested in finding out whether a new medication will have undesirable effects on patients pulse rates. Since she knows that the mean pulse rate for the population under the study is 82 beats per minute, the hypotheses for this situation are: b. A contractor wishes to lower heating bills by using a special type of insulation in houses. If the...
I. IF we do not reject the null hypothesis when the alternative hnthsinthen we have made Type B error (b) Correct decision (e) Type I error (a) Type I1 error Use for Problems 2 and 3. The data below shows the top 10 teams' winning percentages (z) and powe ratings (u) for the 2013-2014 NCAA basketball season, according to vww.teasrankings.com bo 100.47 b 20.43 08330.694 2. Interpret the estimated slope of the line. (a) For a 1-game decrease in power...
PLEASE SOLVE USING PYTHON 3 Show all your answers with hypothesis (null and alternative) and calculations by using python libraries!! Question 2 (15 points): A report by the Gallup Poll found that a woman visits her doctor, on average, at most 5.8 times each year. A random sample of 20 women results in these yearly visit totals 3; 2; 1; 3; 7; 2; 9; 4; 6; 6; 8; 0; 5; 6; 4; 2; 1; 3; 4; 1 At the a=...
f , g and h Problem 2 State the null hypothesis for: a. An experiment testing whether echinacea decreases the the rate of colds length by 80%. echinacea does not decrease the rate of clods length by 80%. b. A correlational study on the relationship between brain size and intelligence. Ho: P = 0 There is no correlation between brain size and intelligence. C. A study comparing a drug with a placebo and aspirin on the amount of pain relief....
1.) State the null and hypothesis 2.) Critical values 3.) P-values 4.) 5.) Reject? 6.) Is there enough evidence? Question 1 of 10 (5 points) | Attempt 1 of 1 | View question in a popup 2h 59m Remaining 11.1 Section Exercise 12 (p-value, table) ol. Recovering from surgery: A new postsurgical treatment was compared with a standard treatment. Eight subjects received the new treatment, while eight others (the controls) received the standard treatment. The recovery times, in days, are...