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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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What is the surface area of a box if it is scaled up by a factor of 10
xenn [34]
If we are scaling up the surface area by a factor of 10 means that the two dimensions of area are each being increased by 10 times the original size. Therefore, the surface area is increased by a factor of 10 x 10, or by a factor of 100.

7 0
4 years ago
Evaluate the expression when x = 2, y = 5, and z = 4.
REY [17]

Answer:

9 is the correct answer

(2×2+1)=5÷5×9=9

8 0
3 years ago
Read 2 more answers
How do you convert 17 cmon minute to miles an hour
eimsori [14]

Answer:

0.006 miles per hour

Step-by-step explanation:

We are given;

Speed in cm per minute ( 17 cm per min)

We are required to convert cm per minute to miles an hour

we need to know that;

1 miles = 160934 cm

1 hour = 60 minutes

We can convert 17 cm to miles and 1 minute to hours

17 cm = 17 ÷ 160934 cm

          = 17/160934

1 minute = 1/60 hour

Therefore;

In miles per hour;

  = (17/160934) ÷ (1/60)

  = 0.00634 miles per hour

  = 0.006 miles per hour

Therefore, 17 cm per minute is equivalent to 0.006 miles per hour

4 0
3 years ago
Sia ran 3/4 miles each day for 5 days did she run at least 6 miles
lana66690 [7]
No,
3/4 * 5=3.75
3.75 is less than 6.
6 0
3 years ago
I don’t understand how this question
Vladimir79 [104]

Answer:

<u>x = √51</u>

Step-by-step explanation:

The given figure is a <u>right triangle</u>.

<u>Using the Pythagorean Theorem to find x</u>

  • (Altitude 1)² + (Altitude 2)² = (Hypotenuse)²
  • (7)² + x² = (10)²
  • 49 + x² = 100
  • x² = 51
  • <u>x = √51</u>
4 0
2 years ago
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