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Andrew [12]
2 years ago
5

15.7 is what percent of 7852

Mathematics
1 answer:
abruzzese [7]2 years ago
3 0
The answer is 1232.764
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For a data set of the pulse rates for a sample of adult? females, the lowest pulse rate is 39 beats per? minute, the mean of the
Zarrin [17]

Answer:

a) The difference is of 35 beats per minute.

b) So 3.07 standard deviations below the mean.

c) Z = -3.07.

Step-by-step explanation:

Z-score:

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

In this question:

Mean \mu = 74, standard deviation \sigma = 11.4

a. What is the difference between the pulse rate of 39 beats per minute and the mean pulse rate of the? females?

39 - 74 = -35

The difference is of 35 beats per minute.

b. How many standard deviations is that? [the difference found in part? (a)?

|Z| when X = 39. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{39 - 74}{11.4}

Z = -3.07

|Z| = 3.07

So 3.07 standard deviations below the mean.

c. Convert the pulse rate of 39 beats per minutes to a z score.

From item b. above, Z = -3.07.

5 0
2 years ago
Which numbers are opposites? 23 and 32 58 and −85 34 and −34 I don't know.
Lynna [10]

Answer:

23 and 32, 58 and -85

7 0
2 years ago
Kết quả của phép tính : 2(x+1) là?
Gwar [14]

Answer:

2x + 2 is your using distributive property

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Find the number of elements in A1 ∪A2 ∪A3 if there are 100 elements in A1, 1000 in A2, and 10,000 in A3 if a) A1 ⊆ A2 and A2 ⊆ A
Stella [2.4K]

Answer:

Step-by-step explanation:

Given that there are 3 sets such that  there are 100 elements in A1, 1000 in A2, and 10,000 in A3

a) If A1 ⊆ A2 and A2 ⊆ A3

then union will contain the same number of elements as that of A3

i.e. n(A1 ∪A2 ∪A3)=n(A3) =10000

b) If the sets are pairwise disjoint.

union will contain the sum of elements of each set

n(A1 ∪A2 ∪A3) = 100+1000+10000=11100

c) If there are two elements common to each pair of sets and one element in all three sets

We subtract common elements pairwise and add common element in 3

i.e. n(A1 ∪A2 ∪A3) = 100+1000+10000-2-2-2+1\\= 10995

5 0
2 years ago
Divide 72Kg in the ratio of 1 3 5
earnstyle [38]
First add the ratio 1:3:5 together to give you the total number:
             1 + 3 + 5 + = 9
Therefore you divide 72 by 9 to give you one part 
             72 divide 9 = 8 
Now you times each part of the ratio by 8:
             1 x 8 = 8 
             3 x 8 = 24 
             5 x 8 = 40 
Therefore the answer would be written like this:
8:24:40 

Hope this helps 
8 0
3 years ago
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