3 years ago

HELP A BRAINLY SISTA OUT!!!

Mathematics

2 answers:

EastWind [94]3 years ago

6 0

Jenifer can paint a room in 10 hours. When Carl helps the time is reduced to 6 hours.

frez [133]3 years ago

3 0

Answer:

10 hours is Jennifer or 12

Step-by-step explanation:

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15 percent of the fruit in the fruit bowl are oranges

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you will multiply the new price plus the original price

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3 years ago

Megan’s driveway is 14/15 mile long. Megan’s driveway is 2/15 mile longer than Matt’s driveway. How long is Matt’s driveway?

marshall27 [118]

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8 0

2 years ago

The variance Var(x) for the binomial distribution is given by equation :

aliina [53]

Answer: d. np(1 - p).

Step-by-step explanation:

Let x be any binomial variable which represents the number of success such that $X\sim B(n, p)$ , where n is the sample size or the total number of trials and p is the probability of getting success in each trial .

Then, the mean E(x) and the variance Var(x) for the binomial distribution is given by equation :

$E(x)=\mu=np$

$Var (x)=\sigma^2=np(1-p)$

where n is the sample size or the total number of trials and p is the probability of getting success in each trial .

Therefore , the correct option is option d. np(1 - p) .

6 0

3 years ago