Answer:
We need a sample size of at least 75.
Step-by-step explanation:
We have that to find our 
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of 
.
So it is z with a pvalue of 
, so 
Now, we find the margin of error M as such
In which 
is the standard deviation of the population and n is the size of the sample.
The standard deviation is the square root of the variance. So:
With a .95 probability, the sample size that needs to be taken if the desired margin of error is 5 or less is
We need a sample size of at least n, in which n is found when M = 5. So
We need a sample size of at least 75.
The question is incomplete :
However, assume Number of cups of flower 10
Number of flour cups for each pie 1/4
Answer:
8
Step-by-step explanation:
Number of cups of flower = 10
Number of flower cups per crust pie = 1/4 cups
Since, the cups of flower was divided equally into to 5 containers;
Number of flower cups per container :
10 / 5 = 2
Each container has 2 cups of flower each.
1 container was used in making crust pie :
The number of crust pies made is:
Cups of flower in container / cups of flower per crust pie
= 2 ÷ 1/4
= 2 * 4 /1
= 8 crust pies
Explanation:
As his uniform is made up of tan or blue pants and a blue or white collared shirt.
So, there are possibly four combinations which are as follows:
- tan pants/blue shirt
- tan pants/white shirt
- blue pants/blue shirt
- blue pants/white shirt
As Benjamin carries an extra piece of white shirt. So, he has a little bit better than 25% chance of wearing his favorite combination.
So,
- Probability of getting tan pants = 2/4 = 1/2
- Probability of getting white shirt = 3/5
The probability of getting both can be computed by simply multiplying 2/4 and 3/5.
So,
- Probability of getting both = 1/2 × 3/5 = 3/10 ⇒ 30%
<em>Keywords: probability, chance</em>
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The answer is g you just have to combine the Like terms
