Mathematics, 15.02.2021 20:50 helper49
Fatimah wants to build a one-sample z interval to
estimate the proportion of students at her school who ate
breakfast every day last week with 90% confidence. She
takes a random sample of 75 students and finds that 20
ate breakfast every day last week.
What critical value z* should Fatimah use to construct
this confidence interval?
A) z* = 1.282
B) z* = 1.645
C) z* = 1.96
D) z* = 2.576
Answers: 2
Mathematics, 21.06.2019 13:00
Use this data in the problem below. follow the steps carefully. round to the nearest tenth. lot 3: week 1: 345 week 2: 340 week 3: 400 week 4: 325 step 1. jim enters the data and calculates the average or mean. step 2. jim calculates the deviation from the mean by subtracting the mean from each value. step 3. jim squares each deviation to remove negative signs. step 4. jim sums the squares of each deviation and divides by the count for the variance. step 5. jim takes the square root of the variance to find the standard deviation.
Answers: 2
Mathematics, 21.06.2019 14:20
Simplify 6sin θsec θ. choices a) 6 tan θ b) 6 cos θ c) 6 cot θ d) 6
Answers: 2
Mathematics, 21.06.2019 15:30
When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer
Answers: 2
Mathematics, 21.06.2019 17:30
How do you use the elimination method for this question? explain, because i really want to understand!
Answers: 1
Fatimah wants to build a one-sample z interval to
estimate the proportion of students at her school...
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