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Lina20 [59]
2 years ago
13

Please help me In this

Mathematics
1 answer:
aniked [119]2 years ago
8 0

Answer:

I think its C i think might be wrong

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Ron has two bags of different stickers. The first bag has 3 cars, 2 trucks, and 5 dinosaurs. The second bag has 6 cars, 4 trucks
Katen [24]

1/2 chance to get a dinosaurs sticker for the first bag. 1/6 chance to get a dinosaurs sticker for the second bag.

4 0
3 years ago
The brand manager for a brand toothpaste must plan a campaign designed to increase brand recognition. He wants to first determin
bulgar [2K]

We need to find out how many adults must the brand manager survey in order to be 90% confident that his estimate is within five percentage points of the true population percentage.

From the given data we know that our confidence level is 90%. From Standard Normal Table we know that the critical level at 90% confidence level is 1.645. In other words, Z_{Critical}=1.645.

We also know that E=5% or E=0.05

Also, since, \hat{p} is not given, we will assume that \hat{p}=0.5. This is because, the formula that we use will have \hat{p}(1-\hat{p}) in the expression and that will be maximum only when \hat{p}=0.5. (For any other value of \hat{p}, we will get a value less than 0.25. For example if, \hat{p} is 0.4, then 1-\hat{p}=0.6 and thus, \hat{p}(1-\hat{p})=0.24.).

We will now use the formula

n=(\frac{Z_{Critical}}{E})^2\hat{p}(1-\hat{p})

We will now substitute all the data that we have and we will get

n=(\frac{1.645}{0.05})^2\times0.5(1-0.5)

n=(32.9)^2\times0.25

n=270.6025

which can approximated to n=271.

So, the brand manager needs a sample size of 271

3 0
3 years ago
So i need some help about percentages.
Lisa [10]
The answer is 12. if you need help, do 60•.2
7 0
3 years ago
Read 2 more answers
If a car factory checks 360 cars and 8 of them have defects, how many will have defects out of 1260?
viktelen [127]
You should expect 28 defected cars.
3 0
3 years ago
Solve number 8 (geometry)
ANEK [815]

Answer:

x = 50

Step-by-step explanation:

the word bisects means that it cuts in half (this is how I understand it, not the official definition :D)

so that means

\angle XAB =\angle BAY\\\\2x=100\\\\x=50

3 0
3 years ago
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