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elena-s [515]
3 years ago
8

The heights of all adult males in Croatia are approximately normally distributed with a mean of 180 cm and a standard deviation

of 7 cm. The heights of all adult females in Croatia are approximately normally distributed with a mean of 158 cm and a standard deviation of 9 cm. If independent random samples of 10 adult males and 10 adult females are taken, what is the probability that the difference in sample means (males – females) is greater than 20 cm?
Mathematics
1 answer:
Lisa [10]3 years ago
3 0

Answer:

Step-by-step explanation:

.7104

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Who every gets it right will get Brainly and 20points
Andreyy89

Answer: Third multiple choice

Step-by-step explanation:

First answer:

Since the fraction is increased by 7, we need to check if the increasing factor is the same for the bottom part of the fraction:

2.54*7=17.78\neq 17.68

The first answer doesn't match, we do the same for all three remaining answer.

2)12*7=84\neq 74

3)36*7=252

4)3.28*7=22.96\neq22.86

In this case, the answer is the third multiple choice.

6 0
3 years ago
18 ft = 6 yd<br> O True<br> O False<br> Help
Tomtit [17]

Step-by-step explanation:

there is 3 feet in a yard

divide by 3

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true

8 0
4 years ago
Read 2 more answers
Round $4.39 to the nearest dollar
pshichka [43]
It would be 4 dollars
8 0
3 years ago
A man was traveling by air is allowed a maximum of 20kg luggages .The man has four bags weighing 3.5kg ,15 kg ,2kg and 1.5kg .Fi
KatRina [158]

Answer:

See explanation

Step-by-step explanation:

Maximum weight = 20 kg

Bag 1 = 3.5kg

Bag 2 = 15 kg

Bag 3 = 2kg

Bag 4 = 1.5kg

Total weight of bags = 22 kg

Excess weight of his luggage = Total weight of bags - Maximum weight

= 22 kg - 20 kg

= 2 kg

Express the excess weight as a percentage of his maximum weight allowed = excess weight / maximum weight × 100

= 2/20 × 100

= 0.1 × 100

= 10%

Express the excess weight as a percentage of his maximum weight allowed = 10%

5 0
3 years ago
Write down three integers, all less than 25 whose range is 10 and mean is 13
Mashutka [201]

Answer:

Step-by-step explanation:

we have the mean=13

(x+y+z)/3=13

x+y+z=39

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x-y=10

x=10+y

the numbers are 9,11,19

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sum is 39

5 0
3 years ago
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