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Dahasolnce [82]

3 years ago

15

Whats 20 % of $48.25?

1 answer:

Bess [88]3 years ago

4 0

48.25 x .20= 9.65
and to finish it you do 48.25-9.65=38.60

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Make a decision about the given claim. use only the rare event? rule, and make subjective estimates to determine whether events

Elan Coil [88]

Given claim: A coin favors heads when tossed, and there are 90 heads in 100 tosses.

Answer: There isn’t sufficient evidence to support this claim, because the coin is a fair coin.

Given claim: Movie patrons have IQ scores with a standard deviation that is less than the standard deviation of 15 for the general population. A simple random sample of 40 movie patrons result in IQ scores with a standard deviation of 14.8.

Answer: Claim is either true or false

In a rare event rule, <span>we conclude that the assumption is probably not correct, if, under a given assumption, the probability of a particular observed event is exceptionally small. </span>

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3 years ago

A single card is drawn from a standard 52-card deck. find the conditional probability that the card is red red, given that it

shepuryov [24]

If it is a heart, it is certain to be red. P(red | heart) = 1

4 0

3 years ago

New York City is the most expensive city in the United States for lodging. The room rate is $204 per night (USA Today, April 30,

Arisa [49]

Answer:

a. P=0.35

b. P=0.12

c. P=0.49

d. Cost: more than $249 per night.

Step-by-step explanation:

We assume a normal distribution with mean $204 and s.d of $55.

To calculate the probability we calculate the z-value for each case

a. What is the probability that a hotel room costs $225 or more

$z=\frac{X-\mu}{\sigma}=\frac{225-204}{55}= \frac{21}{55}= 0.382\\\\P(X>225)=P(z>0.382)=0.35$

b. What is the probability that a hotel room costs less than $140

$z=\frac{140-204}{55}= \frac{-64}{55}=-1.164\\\\P(X$

c. What is the probability that a hotel room costs between $200 and $300

$z=\frac{200-204}{55}= \frac{-4}{55}=-0.073\\\\P(X$

d. What is the cost of the most expensive 20% of hotel rooms in New York City?

In this case, we have to estimate z' so thats P(z>z')=0.2. This value is z=0.841.

Then, the value of X should be:

$X=\mu+z*\sigma=204+0.815*55=204+45=249$

7 0

3 years ago

Armando read 20 pages of his 200-page book in 4 hours. At this rate, how long will it take him to read the entire book?

Deffense [45]

20 pages in 4 hours.
Total pages of book is = 200
Therefor: 200/20= 10
= 10 x 4 = 40 hours

6 0

3 years ago

Read 2 more answers

Trevor’s total employment compensation is $33,500. If Trevor has no job expenses and his gross pay is $28,600, then his total em

EleoNora [17]

we know that

$Total\ employment\ compensation=gross\ pay+employee\ benefits-job\ expenses$

in this problem

$Total\ employment\ compensation=33,500\ dollars$

$gross\ pay=28,600\ dollars$

$job\ expenses=0$

Step $1$

Find the total employee benefits

Let

EC------> total employment compensation

EB--------> total employee benefits

GP------> gross pay

JE------> job expenses

$EC=GP+EB-JE$

$33,500=28,600+EB-0\\ EB=33,500-28,600\\ EB=4,900\ dollars$

Step $2$

Find the percentage of the total employee benefits

we know that

total employee benefits is equal to $4,900\ dollars$

gross pay is equal to $28,600\ dollars$

by proportion

$\frac{28,600}{4,900} =\frac{100}{x} \\ \\ x*28,600=100*4,900\\ \\ x=\frac{100*4,900}{28,600}$

$x=17.1$ %

therefore

the answer is the option

d. 17.1

4 0

4 years ago

Read 2 more answers