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STatiana [176]
3 years ago
14

Emily is training for a 10K race. On day one, she runs for 20 minutes. On day two, she runs for 30 minutes. On day three, she ru

ns for 40 minutes. If this pattern continues, how many minutes will she run on day 12?
Mathematics
1 answer:
Shalnov [3]3 years ago
6 0

Answer:

130

Step-by-step explanation:

:0

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The heart rate variability​ (HRV) of police officers was the subject of research published in a biology journal. HRV is defined
nexus9112 [7]

Step-by-step explanation:

Consider the provided information.

Part (A) We need to find the confidence coefficient.

The given value or percentage of probability is known as the confidence  coefficient that the interval contains the parameter.

Hence, the confidence coefficient is 0.90

Part (B) Practical interpretation of both of the 99% confidence intervals.

It means that there is 99% confident that the mean of population HRV for officers diagnosed hypertension which lies between 6.9​ and 122.9​

There is 99% confident that the mean of population HRV for officers those are not hypertensive which lies between 144.2 and 184.9.

Part (C)

If you are saying 99% confident that means the 99% of the similarly generated confidence intervals will contain the true value of the population mean in repeated sampling.

Part (D)

If We want to reduce the width of each confidence interval, you need to use smaller confidence coefficient.

8 0
3 years ago
Sally makes 7 out of every 10 shots she takes during practice. If this pattern were to continue, how many would she make during
Levart [38]

Answer:

21

Step-by-step explanation:

  • 7 for first 10 shots
  • 7 for another 10 shots
  • 7 for last 10 shots
4 0
3 years ago
Read 2 more answers
Eliminate the parameter. x = 1/2t, y = 3t^3 - 1
Elis [28]
X = t/2. t = 2x
y = 3t^3 - 1
y = 3(2x)^3 -1

y = 24x^3 -1
4 0
3 years ago
a seed company has a test plot in which it is testing the germination of a hybrid seed, They plant 50 rows of 40 seeds per row.
ziro4ka [17]

Answer:

Mean =\sum x P(x) = 36.86

Standard deviation =\sum x^2P(X)=1360.9

Step-by-step explanation:

x          P(x) x \times P(x)       x^2 \times  P(x)

33         0.02     0.66          21.78

34          0.06     2.04         69.36

35           0.1      3.5        122.5

36           0.2      7.2         259.2

37           0.24     8.88        328.56

38           0.26     9.88        375.44

39            0.1     3.9         152.1

40            0.02     0.8         32

             1        36.86      1360.9

We are supposed to find mean and standard deviation

Mean =\sum x P(x) = 36.86

Standard deviation =\sum x^2P(X)=1360.9

7 0
3 years ago
What place value is this in 8.7438 the under lined number is 7​
MA_775_DIABLO [31]

Answer:

tenths place

Step-by-step explanation:

8 0
3 years ago
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