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kaheart [24]
2 years ago
12

Please helppp plsssss i have a few minsssss

Mathematics
1 answer:
dedylja [7]2 years ago
4 0

Answer:

14 m.

Step-by-step explanation:

sana naka tulong ang sagot ko

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Doctors are interested in determining if the human body temperature is really 98.6 degrees. he selects 30 students and records t
MaRussiya [10]

Answer:

I think its one mean, if it's not I'm very sorry

5 0
3 years ago
As a store manger you would like to find out the average time it takes to unload the truck which delivers the merchandise for yo
Georgia [21]

Answer:

The upper boundary of the 95% confidence interval for the average unload time is 264.97 minutes

Step-by-step explanation:

We have the standard deviation for the sample, but not for the population, so we use the students t-distribution to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 35 - 1 = 35

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 34 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.9}{2} = 0.975([tex]t_{975}). So we have T = 2.0322

The margin of error is:

M = T*s = 2.0322*30 = 60.97

The upper end of the interval is the sample mean added to M. So it is 204 + 60.97 = 264.97

The upper boundary of the 95% confidence interval for the average unload time is 264.97 minutes

4 0
3 years ago
Read 2 more answers
Need help with 1,4,7 please
Alex_Xolod [135]
I dont understand the question that you are asking
3 0
3 years ago
2/5 x 3 as a fraction
Svet_ta [14]

Answer:

1   1/5

Step-by-step explanation:

2/5 x 3 as a Fraction = 1 1/5

Improper Fraction = 6/5

Mixed Number = 1 1/5

8 0
3 years ago
Read 2 more answers
Please please please I'm begging you help me find the y intercept for these I will give brainliest
konstantin123 [22]

Answer:

1. (2+2)/(-3+4)= 4/1= 4

y + 2 = 4(x + 4)

y + 2 = 4x + 16

y = 4x + 14 y-intercept:(0,14)

2. (0+5)/(-1+2)= 5/1= 5

y + 5 = 5(x + 1)

y + 5 = 5x + 5

y = 5x

y-intercept (0,0)

3. (-1+1)/(-5-3)= 0/-8= 0

y + 1 = 0(x - 3)

y + 1 = 0

y= -1

6 0
3 years ago
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