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andreev551 [17]
3 years ago
13

simple random sample from a population with a normal distribution of 99 body temperatures has x overbarequals98.20degrees Upper

F and sequals0.63degrees Upper F. Construct a 95​% confidence interval estimate of the standard deviation of body temperature of all healthy humans. Is it safe to conclude that the population standard deviation is less than 1.50degrees Upper F​?
Mathematics
1 answer:
Verizon [17]3 years ago
7 0

Answer:

Step-by-step explanation:

Let x be the normal body temperature

X is N(99, sigma)

Sample mean x bar = 98.2 and s = 0.63

Margin of error = Z critical * 0.63 = 1.95 *0.63 = 1.2285

It is safe since 1.5 <1.96 critical value of z at 95%

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Answer: There will be 4 teams such that each team has same number of graders of both.

Step-by-step explanation:

Since we have given that

Number of 6th graders = 36

Number of 7th graders = 40

We need to find the greatest number of teams that the students conform if each team has the same number of 6th grader and the same number of 7th graders.

So, we will find H.C.F. for the greatest number of teams.

H.C.F. of 36 and 40 =4

Hence, there will be 4 teams such that each team has same number of graders of both.

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Answer:

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Answer:

v = 48

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11x+3y=103 and y=3x+1. 

11x+3(3x+1)=103  -----> plug in (3x+1) for y in the first equation.  You will want to distribute the 3 to the 3x+1 to get something that looks like:

11x+9x+3=103    ------> now you want to combine like terms 

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(5, 16) will be your final answer (:
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