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2 years ago

6

with a mean of 32 minutes and a standard deviation of 5 minutes. What is the probability that a randomly selected customer will

have to wait less than 21 minutes, to the nearest thousandth?

1 answer:

Gala2k [10]2 years ago

4 0

Answer:

1.39%

Step-by-step explanation:

(21 - 32) / 5 = -2.2 z score

= 0.0139 so there is a 1.39% probability

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Mags is 2 years older than Vector. Which equation will

Salsk061 [2.6K]

Answer:

m = v + 2

Step-by-step explanation:

Since Mags (m) is 2 years older than Vector (v)

You can use the equation V + 2 which is Vector's age + 2 years. Which would be equal to Mags' age.

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2 years ago

How do I find the percentile of someone with a certain number of things from a dot plot data set?

dalvyx [7]

Answer:

percentile rank of x =

number of values before x 100

--------------------------------------------------- x ----------

number of total values on the dot plot 1

Step-by-step explanation:

you divide the number of values before x over the number of total values on the dot plot, and divide the quotient by 100 to get your percentile.

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3 years ago

In how many ways can you seat 5 women and 5 men in a row if women must seat next to each other,men must seat next to each other,

makvit [3.9K]

Answer: 288ways

Step-by-step explanation:

There are 5men and 5women to be arranged, since the men must seat together, they will be arranged in 5! ways. For the women, since they must also seat together but with siamese twins between them, they can be arranged in 4! ways instead of 5! ways and this is due to presence of the twins among them.

Note that Siamese twins cannot be separated as such both are taken as one making it 4!.

Since the women and men are always sitting together, they can be arranged in 2! ways i.e 2 sexes

The final seating arrangement can be done in 2!×(5!+4!) ways

= 2× (120+24)

= 2×144

= 288ways.

Note that the arrangement of the men and women are added because they can only be arranged differently to ensure different sex are not sitting together.

8 0

3 years ago

A train has an average speed of 18 miles per hour. How long will it take to travel 270 miles?

NARA [144]

I believe the answer is 15 because if you divide 270/18 you get 15 <span />

8 0

3 years ago

Read 2 more answers

Jamie and Stella are saving money to sign up for a school trip to Washington, D.C. In order to sign up for the trip, they must p

DanielleElmas [232]

Answer:

1. Let, Jamie needs "$ g" for the trip. Then, according to the question,

g = 600 -------------------(1)

2. Let, Stella needs "$ m" for the trip. Then, according to the question,

m = 600 -------------(2)

3. If Jamie washes x no. of cars and Stella makes y no. of pies, then,

25x ≥ 600 ≥ 15y -------------(3)

4. Yes, Stella can afford to sign up for the trip with the money she earns.

Step-by-step explanation:

Let, Jamie needs "$ g" for the trip. Then, according to the question,

g = 600 -------------------(1)

Let, Stella needs "$ m" for the trip. Then, according to the question,

m = 600 -------------(2)

if Jamie washes x no. of cars for $25 each and Stella makes y no. of pies

for $ 15 each, then, according to the question,

25x ≥ 600 ≥ 15y -------------(3)

Yes, Stella can afford to sign up for the trip with the money she earns. Because, she can make at most 40 pies for $15 each and

$ $40 \times 15$ = $ 600 = The amount of money Stella needs for the trip.

7 0

3 years ago