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satela [25.4K]
3 years ago
6

A calculus exam that was taken by 94 students is recorded and normally distributed. The mean score on the exam is 78 and the sta

ndard deviation is 2.4. What percent of the scores are in the 70.8 and 85.2 range?
Mathematics
1 answer:
Luden [163]3 years ago
5 0

Answer:

99.73%

Step-by-step explanation:

If you have a calculator with distribution functions, this problem boils down to using a single command:

norm(70.8, 85.2, 78, 2.4) = 0.9973

This tells us that 99.73% of the scores are in the 70.8-85.2 range.

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A random sample of 4000 U.S. citizens yielded 2150 who are in favor of outlawing cheesing. Find the point estimate for estimatin
Darina [25.2K]

Answer:

0.5375

Step-by-step explanation:

The point estimate of  proportion of all Americans who are in favor of outlawing cheese can be computed as

p=x/n

Here. x is the number of favorable outcomes and n is sample size.

We are given that x=2150 and n=4000, So,

p=2150/4000

p=0.5375.

Thus, the point estimate of  proportion of all Americans who are in favor of outlawing cheese is 0.5375.

6 0
3 years ago
Find the values of the variables. Show your work and explain your steps. The diagram is not to scale.
Travka [436]

Answer:

w=59 y=59 z=53 x=121 v=121

Step-by-step explanation:

inside a triangle the angles should add up to 180 so you can easily do 180-31 -90 to find w then with that you can find the rest and also w is equal to y cause theyre vertical angles

6 0
2 years ago
Read 2 more answers
A candidate for city council wants to determine how much support she has among the voters in her district by conducting a survey
SpyIntel [72]
I think c .. I already took a course .. and the test had that question.. I cant remember the answer though
5 0
3 years ago
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For lunch, Kile can eat a sandwich with either ham or a bologna and with or without cheese. Kile also has the choice of drinking
Scorpion4ik [409]

Answer:

8

Step-by-step explanation:

Ham with or without cheese-2 choices

Bologna with or without cheese-2 choices

Bologna with cheese with water or juice-2 choices

Bologna without cheese with juice or water-2 choices

Ham with cheese with juice or water -2 choices

Ham without cheese with juice or water -2 choices

2+2+2+2=8

Kile has 8 choices for lunch

4 0
3 years ago
Solve the equation 1.2x = 5.16 for x.
Kobotan [32]

1.2x = 5.16

x = 5.16/1.2

x = 4.3

5 0
3 years ago
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