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Zigmanuir [339]
2 years ago
12

The probability of being a universal donor is 6% (O-negative-blood type). Suppose that 6 people come to a blood drive.

Mathematics
1 answer:
Rufina [12.5K]2 years ago
7 0

Answer:

babala

Step-by-step explanation:

The probability of being a universal donor is 6% (O-negative-blood type). Suppose that 6 people come to a blood drive.

a) What are the mean and standard deviation of the number of universal donors among the 6 people?

b) What is the probability that there are exactly three universal donors?

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A streaming music site changed its format to focus on previously unreleased music from rising artists. The site manager now want
nika2105 [10]

Answer:

D) The manager should fail to reject the null hypothesis; there is not enough evidence to conclude that the number of unique daily listeners has changed.

Step-by-step explanation:

The scenario indicates the null hypotheses and alternative hypotheses are

Null hypotheses: The number of unique daily listeners hasn't changed.

Alternative hypotheses: The number of unique daily listeners has changed.

The null hypothesis is rejected if the calculated p-value is less significance level.

We are given that p-value is 0.0743 and confidence level=0.95.

Significance level =α=1-0.95=0.05.

As we can see the p-value is greater than significance level, so, we fail to reject the null hypotheses at 5% significance level.

Thus, we conclude at the 95% confidence level that the manager should fail to reject the null hypothesis; there is not enough evidence to conclude that the number of unique daily listeners has changed

8 0
3 years ago
The histogram displays how many students are in each classroom during homeroom. What percentage of classrooms have 25 students o
Lelechka [254]

Answer:

its 40% but since it's not there it could be 45%

Step-by-step explanation:

hope this helps

3 0
3 years ago
Read 2 more answers
Henry bought a magazine for $5 and two vitamin waters. Henry spent a total of $11. How much did each vitamin water cost? $
saveliy_v [14]
5+x=11
-5    -5
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x=6
5 0
3 years ago
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Jean and Clint stack boxes at a warehouse. Jean stacks 50 boxes per hour. Clint stacks 60 boxes per hour. Which of the following
Valentin [98]
Represent the total number of boxes that both jean and clint stack in h hours,

total number of boxes=(50xh)+(60xh)
you want the total number of boxes for both of them together. so the amount they can stack times h or the hours. so if h=5 you would do 50x5 plus+ 60x5 which would give you 250 and 300. add the two you get 550 boxes for 5 hours total.
5 0
3 years ago
Describe or show two ways to find the following product: 1/4 x 2/3.
Anon25 [30]
1/4 = 0.25
2/3 = 0.666666667
0.25(0.666666667) = 0.166666667 = \frac{1}{6}
______________________________

\frac{1}{4} ( \frac{2}{3})  =  \frac{2}{12} =  \frac{1}{6} = 0.166666667

7 0
3 years ago
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