Mathematics, 27.11.2020 21:20 samantha9430
Oven thermostats were tested by setting them to 350°F and measuring the actual temperature of the oven. In a sample of 67 thermostats, the average temperature was 348.2°F and the standard deviation was 5.1°F.
a) Find a 90% confidence interval for the mean oven temperature.
b) Find a 95% confidence interval for the mean oven temperature.
c) What is the confidence level of the interval (347.5, 348.9)?
d) How many thermostats must be sampled so that a 90% confidence interval specifies the mean to within ±0.8°F?
e) How many thermostats must be sampled so that a 95% confidence interval specifies the mean to within ±0.8°F?
Answers: 1
Mathematics, 21.06.2019 20:40
Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?
Answers: 3
Mathematics, 22.06.2019 00:00
Plz hurry finals a paper cup in the shape of an inverted cone is 8 inches tall and has a radius of 1.5 inches. how much water can the cup hold? use 3.14 for pi. round the answer to the nearest tenth. a) 12.6 cubic in. b) 18.8 cubic in. c) 37.7 cubic in. d) 56.5 cubic in.
Answers: 2
Mathematics, 22.06.2019 01:00
Mia’s gross pay is 2953 her deductions total 724.15 what percent if her gross pay is take-home pay
Answers: 1
Mathematics, 22.06.2019 02:40
Explain how the quotient of powers was used to simplify this expression.
Answers: 1
Oven thermostats were tested by setting them to 350°F and measuring the actual temperature of the ov...
History, 12.07.2019 14:30
Mathematics, 12.07.2019 14:30
History, 12.07.2019 14:30
Social Studies, 12.07.2019 14:30
Biology, 12.07.2019 14:30
English, 12.07.2019 14:30
Health, 12.07.2019 14:30
Mathematics, 12.07.2019 14:30