3 years ago

Please answer ASAP! Consistently wash your hands for a good minute.

Mathematics

1 answer:

8_murik_8 [283]3 years ago

8 0

Answer:

20 inches

Step-by-step explanation:

x/2=10

20/2=10

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A statistics teacher started class one day by drawing the names of 10 students out of a hat and asked them to do as many pushups

HACTEHA [7]

Answer: b. 8.56 to 21.44

Step-by-step explanation:

Let $\mu$ be the mean number of pushups that can be done.

As per given , we have

Sample size : n= 10

Degree of freedom = n-1=9

Sample mean : $\overline{x}=15$

Sample standard deviation : $s=9$

Significance level : α=1-0.95=0.05

From t- distribution table ,

Critical two -tailed t-value for α=0.05 and df = 9 is

$t_{\alpha/2, 9}=t_{0.025,9}=2.2622$

Confidence interval for $\mu$ is given by :-

$\overline{x}\pm t*\dfrac{s}{\sqrt{n}}$

$=15\pm (2.2622)\dfrac{9}{\sqrt{10}}\\\\\approx 15\pm 6.44=(15-6.44,\ 15+6.44)\\\\=(8.56,\ 21.44)$

Hence, the 95% confidence interval for the true mean number of pushups that can be done is 8.56 to 21.44.

5 0

2 years ago

PLEASE GIVE ME THE ANSWER SOMEONE

alexdok [17]

Answer:

I think it is B sorry if wrong.

Step-by-step explanation:

4 0

2 years ago

Solve Thais equation <br> 2x=8(4x-5).

Misha Larkins [42]

4/3 in fraction form

6 0

3 years ago

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if a staircase rises 52° from the ground and a vertical distance of 12 yards. How much horizontal distance does the staircase co

3241004551 [841]

The horizontal distance will be found using the formula:
tan θ= opposite/adjacent
given that θ=52°
opposite= 12 yards
adjacent=x
hence
tan 52=12/x
x=12/tan 52
x=9.3754
the height is 9.375 yards

3 0

2 years ago

What is the measure of angle M?

Nesterboy [21]

Answer:

35°

Step-by-step explanation:

4x+11 = 5x-24

5x-4x=x

x=24+11

x=35

3 0

3 years ago