Mathematics, 04.11.2019 21:31 Jakethedog210
Anutritionist in a large company’s cafeteria has a guideline saying employees’ daily zinc intake should be about 14 mg/day. she selects a simple random sample of 70 employees and measures their zinc intake for one day. she finds their average intake is 13.8 mg. earlier studies suggest that the population standard deviation of intakes is about 0.9 mg.
(a) run a test, using significance level α = 0.05, to decide whether these data are stong evidence that the whole company population of employees took in too little zinc that day.
• hypotheses:
• assumptions:
• test statistic:
• p-value:
• conclusion:
(b) suppose the population mean really was 14. before sampling, what was the probability the test would reject h0 : µ = 14 even though it is true? which type of error is this?
Answers: 3
Mathematics, 21.06.2019 19:30
Which inequality has a dashed boundary line when graphed ?
Answers: 2
Mathematics, 22.06.2019 04:00
At school 460 of the students walk to school the number of students who take public transit is 20% of the number of students who walk. how many students take public transit
Answers: 2
Mathematics, 22.06.2019 05:00
Give another definition of variability and explain how it can be calculated.
Answers: 1
Anutritionist in a large company’s cafeteria has a guideline saying employees’ daily zinc intake sho...
Chemistry, 06.07.2021 16:20
Chemistry, 06.07.2021 16:20
Mathematics, 06.07.2021 16:20
Mathematics, 06.07.2021 16:20
Computers and Technology, 06.07.2021 16:20
Computers and Technology, 06.07.2021 16:20