Mathematics, 23.07.2021 03:00 Arealbot
24) Let be a specific value of t. Find such that the following statement is true:
P(t ≥ ) = .05 where df = 20.
25) Determine the confidence level for the given confidence interval for μ.
± 1.88 25)
A) 94% B) 3% C) 97% D) 98.5%
26) A random sample of n measurements was selected from a population with unknown mean μ and known standard deviation σ. Calculate a 95% confidence interval for μ for the given situation. Round to the nearest hundredth when necessary.
n = 100, = 74, σ = 2526)
A) 74 ± 0.49B) 74 ± 49C) 74 ± 4.9D) 74 ± 4.11
27) A 90% confidence interval for the average salary of all CEOs in the electronics industry was constructed using the results of a random survey of 45 CEOs. The interval was Give a practical interpretation of the interval.27)
A) We are 90% confident that the mean salary of the sampled CEOs falls in the interval $110,389 to $128,192.
B) We are 90% confident that the mean salary of all CEOs in the electronics industry falls in the interval $110,389 to $128,192.
C) 90% of all CEOs in the electronics industry have salaries that fall between $110,389 to $128,192.
D) 90% of the sampled CEOs have salaries that fell in the interval $110,389 to $128,192.
28) A random sample of 250 students at a university finds that these students take a mean of 15.3 credit hours per quarter with a standard deviation of 1.6 credit hours. Estimate the mean credit hours taken by a student each quarter using a 95% confidence interval. Round to the nearest thousandth.28)
A) 15.3 ± .157B) 15.3 ± .198C) 15.3 ± .013D) 15.3 ± .010
Answers: 1
Mathematics, 21.06.2019 19:00
Find the equation of a line whose slope is 2/5 and y- intercept is 2.write your answer in the form 1) ax+by+c=02) x/a+y/b=1
Answers: 1
Mathematics, 21.06.2019 20:30
Hi if you want to play a sports related kahoot go to kahoot.it and type in this code: 659344
Answers: 1
Mathematics, 21.06.2019 23:00
How many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.) how many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.)
Answers: 2
24) Let be a specific value of t. Find such that the following statement is true:
P(t ≥ ) = .05 whe...
Social Studies, 21.01.2020 20:31
Computers and Technology, 21.01.2020 20:31
Social Studies, 21.01.2020 20:31
Medicine, 21.01.2020 20:31