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2 years ago

HELPPP LAST ATTEMPT!!

Mathematics

1 answer:

likoan [24]2 years ago

5 0

(6,2) reflections change y axis

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The average time a subscriber spends reading The Wall Street Journal is 49 minutes (The Wall Street Journal Subscriber Study). A

erica [24]

Answer:

$P(X>60)=P(\frac{X-\mu}{\sigma}>\frac{60-\mu}{\sigma})=P(Z>\frac{60-49}{16})=P(z>0.6875)$

And we can find the probability with the complement rule and the normal standard distirbution and we got:

$P(z>0.6875)=1-P(z$

Step-by-step explanation:

Let X the random variable that represent the time spent reading of a population, and for this case we know the distribution for X is given by:

$X \sim N(49,16)$

Where $\mu=49$ and $\sigma=16$

We are interested on this probability

$P(X>60)$

And we can use the z score formula given by:

$z=\frac{x-\mu}{\sigma}$

Using this formula we got:

$P(X>60)=P(\frac{X-\mu}{\sigma}>\frac{60-\mu}{\sigma})=P(Z>\frac{60-49}{16})=P(z>0.6875)$

And we can find the probability with the complement rule and the normal standard distirbution and we got:

$P(z>0.6875)=1-P(z$

5 0

3 years ago

Plz help illl give brainlist to you

harina [27]

33 girls and 57 boys
so total = 33 + 57 = 90 players

20% left handed = 90 x 0.2 = 18

answer
18 left-handed players

7 0

3 years ago

Read 2 more answers

Four ninths plus one ninth?

Kazeer [188]

Answer:

5/9

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

A customer at a Mexican diner placed an order for 3 burrito bowls which was priced at $x each. He also ordered a plate of corn t

Daniel [21]

Answer:

x=$7

Step-by-step explanation:

The total cost of bill is $32, $11 is from a plate of corn tacos. And there are 3 purchased burrito bowls at a cost of $x each.

$32 (total bill)

-$11 (tacos)

=$21

$21 / 3 (burrito bowls)

=$7

x<em> </em>or the cost of each burrito bowl is $7

5 0

3 years ago

Read 2 more answers

PLEASE HURRY WILL GIVE BRAINLIEST A truck can be rented from Company A for $90 a day plus $0.30 per mile. Company B charges $70

arlik [135]

After 40 miles the rental cost for both is the same

4 0

3 years ago