2 years ago

Someone add me need friendsss :)) (ps we can help each other on our homework!!)

Mathematics

1 answer:

elena-14-01-66 [18.8K]2 years ago

7 0

Answer:

ok im sending you a freind request now

Step-by-step explanation:

i hope you arent higher than highschool level work tho

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A university with a high water bill is interested in estimating the mean amount of time that students spend in the shower each d

Bas_tet [7]

Answer: $(4.0845,\ 6.5755)$

Step-by-step explanation:

As per given , we have

n = 11

$\overline{x}=5.33\\\\ s=1.33$

Since population standard deviation is missing, so we use t-test.

Critical t-value for 99% confidence :

$t_{\alpha/2,\ n-1}=3.106$ [using two-tailed t-value table]

Confidence interval :

$\overline{x}\pm t_{\alpha/2}\dfrac{s}{\sqrt{n}}\\\\= 5.33\pm (3.1060)\dfrac{1.33}{\sqrt{11}}\\\\\approx5.33\pm1.2455\\\\=(5.33-1.2455,\ 5.33+1.2455)\\\\=(4.0845,\ 6.5755)$

Hence, 99% confidence interval for the mean amount of time that students spend in the shower each day.= $(4.0845,\ 6.5755)$

7 0

2 years ago

Whoever responds first will get marked Best!please look at the picture!Which scenario has the same area as the given figure?

Nutka1998 [239]

Answer:

D) 96 is closest

Step-by-step explanation:

12x7=84

1/2(8)(4)=16

84+16=100

A = 30

B = 45

C = 160

D = 96

4 0

2 years ago

What is the y-intercept of the graph that is shown below?

Gnoma [55]

Answer:

(0,4)

Step-by-step explanation:

The y intercept is where the x value is zero

x=0 and y =4

The y intercept is (0,4)

7 0

2 years ago

Check all apply 2|3x+2|-9=5

slava [35]

The answer is X=3 or x=5/3

3 0

3 years ago

Which equation matches the graph shown?

pogonyaev

Answer:

C. y = 4x - 3

Step-by-step explanation:

<u>The line has a positive slope and negative y-intercept.</u>

m = 4, b = - 3

This is only matched by a choice C

4 0

2 years ago

Read 2 more answers