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Sedaia [141]
3 years ago
12

A test was done to look at the maximum speed of mopeds. They found that the maximum speed had a normal distribution with a mean

of 29 mph and standard deviation of 1.4 mph. Consider randomly selecting a moped.
a. What is the probability that the maximum speed is at most 31 mph?
b. What is the probability that the maximum speed is at least 29.8 mph?
c. What is the probability that maximum speed differs from the mean value by at most 1.5 standard deviations?
d. Suppose we select 49 mopeds, what is the probability that the sample mean will be at least 29.5 mph?
Mathematics
1 answer:
Ksenya-84 [330]3 years ago
8 0

Answer:

C

Step-by-step explanation:

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A round table has 4 legs and a rectangular table has 6 legs. If 10 tables have a total of 52 legs, how many of the legs belong t
ivolga24 [154]

Answer:

16 because if each chair has 4 legs you multiply that by the amount of chairs you have. 4x4=16

Step-by-step explanation:

4x4=16

3 0
2 years ago
Please answer right away
Andreas93 [3]

Answer:

20 miles with an error margin of  ± 8 miles

Step-by-step explanation:

The margin of error of a result is the range in which an error can vary. To find the margin of error between both distances we have to

28-12 = 16, that is, the variation of the result has a range of 16 miles. So we will look for the midpoint of both distances

(X2-X1)/2+X1=(28-12)/2+12=16/2+12=8+12=20

So from this midpoint the value can vary between 8 points below and 8 points above that would cover the difference of 16 miles that we observed at the beginning

In this way, the correct answer is 20 miles with an error margin of  ± 8 miles

Done

8 0
3 years ago
What is the LCD of 4, 5, and 6
Ahat [919]
Solutions 

<span>To solve the problem our first step is to find the prime factorization of each number. </span>

4 = 2² 
<span>5 = 5 </span>
<span>6 = 2 x 3 
</span>
Calculations 

<span>LCM = 2² x 3 x 5 = 60 </span>
6 0
3 years ago
Jada jumped rope for 15 mins.. what percentage of diegos time is that? (diegos time is 20 mins)
8_murik_8 [283]

Answer:

103 percent

just divide 20 by 15 and multiply the answer by 100 to convert to percentage form bro

4 0
3 years ago
I NEED HELP WITH THIS
aivan3 [116]

Answer:

(5,0)  & (3 , -1)

Step-by-step explanation:

Solution is the points where the parabola and line intersects.

5 0
3 years ago
Read 2 more answers
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