Night Owls ~ A MSU psychologist reports that 38% of MSU students regularly sleep less than 8 hours each night. Cindy believes that the actual proportion of MSU students who regularly sleep less than 8 hours each night is less than the value reported by the MSU psychologist. She randomly selects 204 students and asks them, "Do you regularly sleep less than 8 hours each night?" She finds that 65 of the 204 students answered "yes" to the question.

Answer:

24

Step-by-step explanation:

8 x 3 = 24

Answer:

2.5 : 2

Step-by-step explanation:

Answer:

$2 : $5

Step-by-step explanation:

40 nickels = $2

50 dimes = $5

Answer:

a) height = 1.88 m

b) slide length = 2.92 m

Step-by-step explanation:

a) sin 70° = x/2

0.9397 = x/2

x = 1.88 m

b) sin 40° = 1.88/slide

0.6428 = 1.88/slide

slide = 2.92 m

9514 1404 393

Answer:

  2000, 3000, 7000

Step-by-step explanation:

The total number of ratio units is 2+3+7=12, so each stands for 1000 in the share.

The girls get 2000 : 3000 : 7000.

Step-by-step explanation:

the the number on the top corner is adding zeros so 6.3 / 10/3 the answer is for that 6.30

Answer:

5

Step-by-step explanation:

3,4,4,5,5,5,5,7,7

If you cross equally on both sides them the median is 5

Answer:

Yes

Step-by-step explanation:

All you need to do is just divide 5,184 by 10.

5,184/10= 518.4

Therefore, the answer is yes.

Answer:

The answer should be 15%

Step-by-step explanation:

Answer:

330 degrees

Step-by-step explanation:

look at 4th quadrant of unit circle

(cos,sin)

(sqrt3/2,-1/2)=330

Answer:

1.7

Step-by-step explanation:

2.3, 3.1, 1.9, 1.7, 1.5 (-0.2)

Answer:

Proved

Step-by-step explanation:

This question is incomplete. The complete details are:

[tex]v = 13.5m/s[/tex] --- speed of the lorry

[tex]v_2 =50km/h[/tex] --- speed limit on the road

Required

Prove that the lorry is within the speed limit

To do this, we simply convert the speed of the lorry to km/h.

So, we have:

[tex]v = 13.5m/s[/tex]

[tex]1m = 0.001km[/tex]

and

[tex]1s = \frac{1}{3600}h[/tex]

So, the expression becomes:

[tex]v = \frac{13.5 * 0.001km}{1/3600h}[/tex]

[tex]v = \frac{0.0135km}{1/3600h}[/tex]

Rewrite as:

[tex]v = 0.0135km/h * 3600[/tex]

[tex]v = 48.6km/h[/tex]

48.6km/h is less than 50km/h (the speed limit).

Hence, the lorry is within the speed limit.

Each row cannot have the same number of trees.

In mathematics, the term "divisibility" describes a number's ability to be divided by another number in an equal amount without any residue. For instance, it's simple to understand how 40 by 4 can be divided. A huge piece of land that can be divided into smaller chunks and sold separately is said to be divisible, much as it is obvious when you cut into a pan of brownies and distribute equal amounts to each of your friends.

As per the given data:

Number of apple trees = 987

Number of rows = 9

To find whether each row has the same number of trees:

If 987 is divisible by 9 then, the same number of trees can be there else not.

= (987/9) = (329/3) = 109.667

Not divisible, so same number of trees cannot be there.

Hence, each row cannot have the same number of trees.

To learn more about divisibility, click:

brainly.com/question/21416852

#SPJ2

The median is going to be 23.

Answer:

Since the calculated value of t =-0.427 does not  fall in the critical region so we accept H0 and conclude that there is enough evidence to show that mean difference in the  age of onset of symptoms and age of diagnosis is  25 months  .

Step-by-step explanation:

The given data is

Difference d= -24 -12 -55 -15 -30 -60 -14 -21 -48 -12 -25 -53 -61 -69 -80

∑ d= -579

 ∑d²= 29871

1) Let the hypotheses be

H0: ud= 25 against the claim    Ha: ud ≠25

H0 : mean difference in the  age of onset of symptoms and age of diagnosis is  25 months  .

Ha:   mean difference in the  age of onset of symptoms and age of diagnosis is not 25 months.

2) The degrees of freedom = n-1= 15-1= 14

3) The significance level is 0.05

4) The test statistic is

t= d`/sd/√n

The critical region is ║t║≤ t (0.025,14) = ±2.145

d`= ∑di/n= -579/15= -38.6

Sd= 23.178  (using calculators)

Therefore

t= d`/ sd/√n

t= -38.6/ 23.178√15

t= -1.655/3.872= -0.427

5) Since the calculated value of t =-0.427 does not  fall in the critical region so we accept H0 and conclude that there is enough evidence to show that mean difference in the  age of onset of symptoms and age of diagnosis is  25 months  .

Answer:

B) equilateral triangle

E) acute triangle

Step-by-step explanation:

Answer:

(0,1)

Step-by-step explanation:

I put it in desmos :)

Answer:

0,1

Step-by-step explanation:

Answer:

explanation

Step-by-step explanation:

just multiply the numerator and the detonator by 4 and u get 16/20

Answer:

8 tables

Step-by-step explanation:

2 class * 30 students + 2 teachers + 2 parents

= 64 people

64 people * 1 table/8 people = 8 tables

Mark brainliest if this helped

Mark brainliest if this helped

Step-by-step explanation:

8 tables because 30+30 =60

and 2+2=4 which is 64 and 8×8=64

Answer:

s' = (3,2) t' = (2,4) u' = (1,1)

Step-by-step explanation:

can i have brainliest plz

Answer:

-4.25

Step-by-step explanation:

Y = -4

Z = ?

-4Z = 17

Z = -4.25

Answer:(0,-2)

Step-by-step explanation:

Answer:

8(3j-2)

Step-by-step explanation:

Answer:

A.

[tex]8(3j - 2)[/tex]

Answer:

yes I think square root of 11 is irrational no....

Answer:

I think A

Step-by-step explanation:

   But im not sure

Answer:

H0 : μd = 0

H1 : μd ≠ 0

Test statistic = 0.6687 ;

Pvalue = 0.7482 ;

Fail to reject H0.

Step-by-step explanation:

H0 : μd = 0

H1 : μd ≠ 0

Given the data:

Before: 15 26 66 115 62 64

After: 16 24 42 80 78 73

Difference = -1 2 24 35 -18 -9

Mean difference, d ; Σd / n

d = Σx / n = ((-1) + 2 + 24 + 35 + (-18) + (-9))

d = Σx / n = 33 / 6 = 5.5

Test statistic = (d / std / sqrt(n))

std = sample standard deviation = 20.146

Test statistic = 5.5 ÷ (20.146/sqrt(6))

Test statistic = 0.6687

The Pvalue :

P(Z < 0.6687) = 0.7482

At α = 0.05

Pvalue > α ; Hence we fail to reject H0

The data does not suggest a significant mean difference in the average number of accidents after information was added to road signs.

Answer:

A.78

Step-by-step explanation:

[tex]\frac{30}{25sec}[/tex] -----> [tex]\frac{78}{65sec}[/tex] (scale by 2.6)

You cant get the answer by following these steps.

1. To find out how much we must increase with our scaling we must divide the denominators.

[tex]\sqrt[25]{65}[/tex]= 2.6

2. Then, we do the scaling. Multiply the numerator and the denominator by 2.6.

num- 30 x 2.6= 78.0 (DONT FORGET UR DECIMALS)

dem- 25 x 2.6 = 65

3. Now you have your answer and all you need to do is show it in fraction form as seen below the words "step by step explanation"

Gook luck and pls give brainlist

Answer: (a)-48 days

Step-by-step explanation:

Given

Joan is watching 275 episodes of Cheers and already watched 83

She can watch 4 episodes per day

Remaining episode 275-83=192

No of days required to finish Cheers

[tex]\Rightarrow n=\dfrac{192}{4}=48\ \text{days}[/tex]

Answer:

(-1,6) is where the point would be.

Just a reflection across the y axis.

Answer:

(-6, 1)

Step-by-step explanation:

I rotate 270 degrees means to turn 90 degrees clockwise 3 times, If You rotate once it is in the +x, -y rotate again -x, -y, and the last time is -x +y. Please give brainliest if this is helpful. Sorry if this is confusing :)

The other person did a 180 degrees rotation instead of 270