Marine biologists have been studying the effects of acidification of the oceans on weights of male baluga whales in the Arctic Ocean. One of the studies involves a random sample of 16 baluga whales. The researchers want to create a 95% confidence interval to estimate the true mean weight of male baluga whales. Their data follow a normal distribution. The population standard deviation of weights of male baluga whales is ????=125 kg, and the researchers feel comfortable using this standard deviation for their confidence interval.
Assuming the relevant requirements are met, calculate the margin of error in estimating the true mean weight of male baluga whales in the Artic Ocean.
a. 15.31 kg
b. 51.40 kg
c. 61.25 kg
d. 80.49 kg

Answer:

THe answere is 40

Step-by-step explanation:

If 24 brownies are sold, the number of ice cream cones sold is 40.

A linear equation is in the form:

y = mx + b;

where y, x is variable, m is the rate of change and b is the y intercept.

Let y represent the number of ice cream cones and x represent the number of brownies sold.

Since there were 5 ice cream cones for every 3 brownies sold at the ice cream shop. Hence:

y = (5/3)x

If 24 brownies are sold:

y = (5/3)x

y = (5/3) * 24 = 40

If 24 brownies are sold, the number of ice cream cones sold is 40.

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Answer:

155 in

Step-by-step explanation:

Theres honestly no easy way to solve this except using a pencil and a notebook.

Anyways, heres how I did it:

6 times 7=42

17 times 5=85

7 times 4=28

42+85+28=155

Answer: c

Step-by-step explanation:

Answer:

the answe is a

Step-by-step explanation:

Answer:

The first one is 109, the 2nd one is the 2nd and 4th choices

Step-by-step explanation:

Answer:what is this

Step-by-step explanation:

bruh

14.5% = 0.145

Step-by-step explanation:

The term 'percent' (%) actually means per 100. So when you say 14.5% it means 14.5 per 100. So when you put that into an equation it actually means:

So when you solve it, 14.5% is actually 0.145 and not 14.5.

Your friend is then incorrect because:

14.5% ≠ 14.5

Answer:

Your friend would be correct. 14.5% divided by 100 is equal to 0.145. When you divide 29/200 you also get 0.145, if you multiply it by 100 you get 14.5%.

Answer:

C.

Step-by-step explanation:

Answer:

I believe is B or -3/5

Good luck!

Answer:

Step-by-step explanation:

Perimeter of a rectangle = 2l + 2w

where

l is the length

w is the width

From the question we have

[tex]2500 = 2l + 2(750) \\ 2500 = 2l + 1500 \\ 2l = 2500 - 1500 \\ 2l = 1000 \\ \frac{2l}{2} = \frac{1000}{2} \\ l = \frac{1000}{2} \\ l = 500[/tex]

We have the final answer as

Hope this helps you

Answer:

9 inches wide

Step-by-step explanation:

so in the text it tells you that the rectangle is 3 inches wide by 4 inches long

then it gives you the final length but you need the width. so what i did is find out how much the increase of the length was, the length was4 at the start then ended at 12 to find out how much it increased i divided 12 by 4 and got 3. that shows that the object is 3 times larger so then I multiplied the original width by 3 which would be 3*3 which equals 9. so 9 is the width of the enlarged shape.

Answer:

It is 1/4

Step-by-step explanation:

If you go from dot to dot on the line, starting with the first dot:

you go to the right 4 times and then up 1 to get to the next dot.

If you put that into a fraction it is [tex]\frac{rise}{run}[/tex] so going up (1) is ontop of going to the right (4), which is 1/4.

Answer:

7 pizzas

Step-by-step explanation

First we subtract 58-25=33

Then we subtract 5-2=3

Now, we have 33 over 3 so we divide them and we get 11

So, that means that each pizza costs $11 and the fee that they charge for each pizza is 3.

So if the customer pays $80 that means that he bought 7 pizzas and he payed $3 fee.

Answer:

33 1/3

Step-by-step explanation:

7/21=1/3

1/3*100=100/3

100/3=33 1/3

Answer:32%

Step-by-step explanation:

330-250=80

80/250=0.32 or 32%

Answer:

I asked my teacher if we could use that she said it's considered cheating, I still use it

Step-by-step explanation:

is this pathogroem therom?

Answer:

a. y = -x² + 2x - 8

b. y = [tex]\frac{1}{x-2}[/tex]

c. y = x³+ 3

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

use midpoint formula

midpt = ((2 + (- 3))/2 , (3 + (- 2))/2) = (-0.5, 0.5)

Answer:

C. The Texture of the Surface

Step-by-step explanation:

I know it's confusing because of A.. But if you think about what would happen if you were to bounce a ball with a lot of force onto the surface, it wouldn't cause a difference in the friction because it would still just bounce right back up. D. is also not applicable because the weight of the ramp wouldn't matter if the ball is rolling on top of it.

Answer: Elijah would be 42 inches tall

Step-by-step explanation:

We all know that Samuel is 48 inches while Elijah is 6 inches shorter.

You subtract 6 from 48 to get 42.

Hopefully, this helped. :D

Answer: 4/5 or 0.8

Step-by-step explanation: To find how much it grows over time, we have to find the slope. to do that, we need to have two points with exact points on the graph, so (0,0) and (4,5). the equation for slope is rise/run. it rises 4, and runs 5. so 4/5.

Answer: b and d

Step-by-step explanation:

What are the measures of angles B and D? A. ∠B ... The perimeter of parallelogram ABCD is 46 inches. ... What is the measure of angle O in parallelogram LMNO? ... Consider the diagram and proof below. ... Rectangle PQRS is shown with its diagonals, PR and QS. ... Which equation can be used to find the measure of ?

Answer:

B.

Step-by-step explanation:

Hope dis helps! :) I know for a fact its correct.

Answer:

The Correct answer for this question is B.

I hope this helps you answer this question.

:)

Answer:

z = 12

Step-by-step explanation:

Answer:

Step-by-step explanation:

4z - 4 = 3z + 8

z = 12

Answer:

What is the question?...

Answer: 35

Step-by-step explanation:

Answer:

65

Step-by-step explanation:

just took the quiz.com

Answer:

(-3, -7)

General Formulas and Concepts:

Algebra I

Point-Slope Form: y - y₁ = m(x - x₁)  

Step-by-step explanation:

Step 1: Define

Point-Slope Form:   y + 7 = 4/3(x + 3)

Step 2: Break function

Slope m = 4/3

Point (-3, -7)

Answer:A

Step-by-step explanation:

The triangle ΔABC is rotated 180° about the origin, then the ΔA'B'C' is obtained.

A spatial transformation is each mapping of feature space to itself and it maintains some spatial correlation between figures.

Triangle ABC is congruent to Triangle A’B’C’.

ΔABC ≅ ΔA'B'C'

The triangle ΔABC is rotated 180° about the origin, then the ΔA'B'C' is obtained.

More about the transformation of a point link is given below.

https://brainly.com/question/27224339

#SPJ2

Answer: 3/13

Step-by-step explanation: