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 18:30, 987654321156
The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?
Answers: 1
Mathematics, 22.06.2019 00:30, JGottem6489
If you invest 1,500 today in a bank that gives you a 5 percent annual interest rate, which of these items can you buy in two years? a. electronics worth $1,650 b. fitness equipment worth $1,700 c. a holiday package worth $2,000
Answers: 2
Mathematics, 22.06.2019 00:50, chinyere614
Identify the statement below as either descriptive or inferential statistics. upper a certain website sold an average of 117 books per day last week. is the statement an example of descriptive or inferential statistics? a. it is an example of descriptive statistics because it uses a sample to make a claim about a population. b. it is an example of inferential statistics because it uses a sample to make a claim about a population. c. it is an example of inferential statistics because it summarizes the information in a sample. d. it is an example of descriptive statistics because it summarizes the information in a sample.
Answers: 1
Mathematics, 22.06.2019 04:30, kfloyd6046
For which scatterplot is the correlation strongest?
Answers: 2
Oven thermostats were tested by setting them to 350°F and measuring the actual temperature of the ov...
Mathematics, 25.08.2020 01:01
Physics, 25.08.2020 01:01
Geography, 25.08.2020 01:01
Mathematics, 25.08.2020 01:01
History, 25.08.2020 01:01
Arts, 25.08.2020 01:01
Spanish, 25.08.2020 01:01
History, 25.08.2020 01:01
Mathematics, 25.08.2020 01:01