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Makovka662 [10]
3 years ago
14

Help me please I need help

Mathematics
1 answer:
weeeeeb [17]3 years ago
4 0
I believe its 27.0, hope i was able to help
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researcher wishes to conduct a study of the color preferences of new car buyers. Suppose that 40% 40 % of this population prefer
TEA [102]

Answer: the probability that exactly 2 buyers would prefer red is 0.0320

Step-by-step explanation:

We would assume a binomial distribution for the color preferences of new car buyers. The formula is expressed as

P(x = r) = nCr × p^r × q^(n - r)

Where

x represent the number of successes.

p represents the probability of success.

q = (1 - r) represents the probability of failure.

n represents the number of trials or sample.

From the information given,

p = 40% = 40/100 = 0.4

q = 1 - p = 1 - 0.4

q = 0.6

n = 14

x = r = 2

Therefore,

P(x = 2) = 14C2 × 0.4^2 × 0.6^(14 - 2)

P(x = 2) = 91 × 0.16 × 0.0022

P(x = 2) = 0.0320

7 0
3 years ago
A football team scored 80% of a total of 500 points in the first 11 games of the season. Fill in the model to show 80% of 500
mote1985 [20]

Answer:

400

Step-by-step explanation:

500 x 0.80 = 400

6 0
3 years ago
Solve for p.<br><br> 2(p + 1) = 24
tensa zangetsu [6.8K]
2p + 2 = 24
2p = 22
p = 22/2
p = 11
5 0
3 years ago
Read 2 more answers
Ms. Wilson surveyed her class of 36 students about their favorite ice cream flavors.
ruslelena [56]

Answer:

1 student.

Step-by-step explanation:

Two thirds of the students preferred chocolate ice cream:

2/3 of 36 is 24 students.

One fourth of the students preferred strawberry ice cream:

1/4 of 36 is 9.

9+24= 35

<em>--------------------------------------------------------------------------------------</em>

36-35=1

Only one student preferred vanilla ice-cream.

7 0
2 years ago
Read 2 more answers
From 1980 to 1990, the consumer price index (CPI) increased from 82.4 to 130.7. If a gallon of apple juice cost $0.95 in 1980 an
ryzh [129]
Answer: C $1.51

To solve this, start with a proportion. Put the CPI numbers on the left and the apple juice prices on the right.

You will have:

82.4/130.7 = 0.95/x

Cross multiply to solve and you will get the price of the juice is $1.51.
4 0
3 years ago
Read 2 more answers
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