subject
Mathematics, 08.07.2019 17:10 nalanisancruzado

Professor bond claims her mean test score is a 80 - but you worry it's lower than that. to test upper h 0 : mu equals 80 versus upper h subscript a baseline : mu less than 80 a simple random sample of size nequals35 is obtained. complete parts a through e below. click here to view the t-distribution area in right tail. (a) does the population have to be normally distributed to test this hypothesis? why? a. yes, because n> 30. b. no, because the test is two-tailed. c. yes, because the sample is random. d. no, because n> 30. (b) if x overbarequals77.5 and sequals5.8, compute the test statistic. the test statistic is t*equals nothing. (round to two decimal places as needed.) (c) approximate the p-value. choose the correct answer below. a. p-valueless than0.005 b. 0.005less thanp-valueless than0.01 c. 0.01less thanp-valueless than0.025 d. 0.025less thanp-valueless than0.05 (d) if the researcher decides to test this hypothesis at the alphaequals0.05 level of significance, will the researcher reject the null hypothesis? no, there is insufficient evidece to prove the mean score is less than professor bond states. yes, there is sufficient evidence to prove the mean score is less than professor bond states. click to select your answer(s) and then click check answer.

ansver
Answers: 2

Another question on Mathematics

question
Mathematics, 21.06.2019 18:20
What is the y-intercept of the line given by the equation
Answers: 2
question
Mathematics, 21.06.2019 19:50
The graph shows the distance kerri drives on a trip. what is kerri's speed . a. 25 b.75 c.60 d.50
Answers: 1
question
Mathematics, 21.06.2019 20:00
Combine like terms to make a simpler expression 3z+z
Answers: 2
question
Mathematics, 21.06.2019 21:30
Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 25002500 grams and a standard deviation of 800800 grams while babies born after a gestation period of 40 weeks have a mean weight of 27002700 grams and a standard deviation of 385385 grams. if a 3232-week gestation period baby weighs 21252125 grams and a 4040-week gestation period baby weighs 23252325 grams, find the corresponding z-scores. which baby weighs lessless relative to the gestation period?
Answers: 1
You know the right answer?
Professor bond claims her mean test score is a 80 - but you worry it's lower than that. to test uppe...
Questions
question
Physics, 19.07.2019 07:30
question
Mathematics, 19.07.2019 07:30