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2 years ago

9

At a school, 40% of the sixth grade students said that hip hop is their favorite kind of music. if 100 sixth grade students perf

er hip hop music, how many sixth grade students are at the school?

1 answer:

dusya [7]2 years ago

6 0

Answer:

Step-by-step explanation:

250 students are in the 6th grade have a good night it is night hear if you live in America east side 10:34 PM

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A manufacturer of matches randomly and independently puts 23 matches in each box of matches produced. The company knows that one

d1i1m1o1n [39]

Answer:

0.9855 or 98.55%.

Step-by-step explanation:

The probability of each individual match being flawed is p = 0.008. The probability that a matchbox will have one or fewer matches with a flaw is the same as the probability of a matchbox having exactly one or exactly zero matches with a flaw:

$P(X\leq 1)=P(X=0)+P(X=1)\\P(X\leq 1)=(1-p)^{23}+23*(1-p)^{23-1}*p\\P(X\leq 1)=(1-0.008)^{23}+23*(1-0.008)^{23-1}*0.008\\P(X\leq 1)=0.8313+0.1542\\P(X\leq 1)=0.9855$

The probability that a matchbox will have one or fewer matches with a flaw is 0.9855 or 98.55%.

8 0

2 years ago

Which point is located at (0.25,-0.5) point A O point O point R

pav-90 [236]

Answer:

• point C

Step-by-step explanation:

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4 0

2 years ago

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Molly works for a meat producer, and she needs to determine whether containers of ground beef have the correct fat content. She

Ghella [55]

Answer:

The correct answer is option (E)

Step-by-step explanation:

Solution to the question

Let us recall from given question that,

H0:p=0.80

Ha:p≠0.80 (which is the two tailed test)

For the p-value we have,

P-value: Let us assume that the null hypothesis is true, then the probability of observing the sample statistics or the more extreme,

Therefore if p= 0.80, the probability of observing or detecting proportion of samples is of at least 0.84 or at most 0.76 is 0.273.

8 0

2 years ago

On the first visit to the veterinarian's office, Elijah's puppy weighed 19 ounces. On the 2nd visit, the puppy had gained 9 ounc

Brums [2.3K]

Answer:

A)84%

Step-by-step explanation:

Orgin: 19 ounces

Second visit: 19+9=28 ounces

Third visit=28+7=35 ounces

35-19=16 ounces gained

16/19=84.2%=84% increase

7 0

2 years ago

8+ what number = 3+8

Nitella [24]

Answer:

3

Step-by-step explanation:

8 + 3 = 3 + 8

Order doesnt matter

5 0

2 years ago

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