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3 years ago

Which data set is least Likely to resemble a normal distribution? Look at picture

Mathematics

1 answer:

kicyunya [14]3 years ago

4 0

Answer: B) The heights of girls who live on a certain street in the city of Buffalo

Every answer choice starts with "the heights of all 14-year-old girls who", so we can ignore that part. Choice A describes the largest population while choice B describes the smallest population. In other words, choice A is very general and broad, while choice B is very specific and narrow. The more specific you get and the smaller the population is, the less likely its going to be normally distributed.

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A dietitian wants to know the average time spent on breakfast in a primary school. The dietitian randomly samples 25 students an

blsea [12.9K]

Answer:

The right options are:

a. The margin of error is 0.632

f. There is a 95% chance that the true mean is between 11.968 and 13.232 minutes.

Step-by-step explanation:

The question is incomplete:

Select one or more:

a. The margin of error is 0.632

b. The margin of error is 1264.

C. The margin of error is 0.600.

d. We believe that the true mean time spent on breakfast is between 11.968 and 13.232 minutes.

e. If we take many other samples from this population, 95% of them will have a sample mean that is between 11968 and 13232.

f. There is a 95% chance that the true mean is between 11.968 and 13.232 minutes.

The margin of error can be calculated from the bounds of the confidence interval as:

$E=\dfrac{UL-LL}{2}=\dfrac{13.232-11.968}{2}=\dfrac{1.264}{2}=0.632$

As the confidence interval is calculated at 95% confidence, we are 95% confident that the true mean is within the calculated interval. We are not 100% confident although (that's why Option d is false).

This interval does not give us information about the sampling distribution (option e is false).

8 0

3 years ago

A post 47m high is supported by wires attached to its top and to a point on level ground, 18m from the foot of the post. Find th

spayn [35]

We need to use the pythagorean theorem

a^2 + b^2 = c^2

where a and b are the legs, and c is the hypotenuse

47^2 + 18^2 = c^2

c = sqrt(2533)

c = 50.33

The length of the wire is 50.33 meters.

(See attached image.)

6 0

3 years ago

Read 2 more answers

Which expression is equivalent to 8x^2 square root 375x+2^3 square root 3x^7,if x =0?

Sedaia [141]

The expression which is equivalent to 8x²√375x + 2³√3x^7 if x = 0 is; 0.

<h3>Which expression is equivalent to the expression given?</h3>

According to the task content, the expression given is; 8x²√375x + 2³√3x^7.

On this note, it follows that when x=0 is substituted into the expression; the evaluation amounts to zero, 0.

Read more evaluating expressions;

brainly.com/question/28027755

#SPJ1

8 0

2 years ago

The table shows the relationship between the amount of money (y) remaining in Maddy's money box and the number of months (x): Fu

algol13

Maddie :
(1,100),(2,80)
slope (rate of change) = (80 - 100) / (2 - 1) = -20/1 = -20

Caitlin :
y = -18x + 120......slope (rate of change) = -18

To determine which rate of change is greater, take the absolute value of the slopes.
Maddy : | -20 | = 20
Caitlin : | -18 | = 18
the greater rate of change is the one with the larger absolute value....so that would be Maddy...function 1 shows a greater rate of change because Maddie spends 20 each month and Caitlin spends 18 each month

4 0

4 years ago

Daniel receives a 35% employee discount on all purchases he makes at the store. If he buys his brother a jersey that is regularl

Alona [7]

Answer:

The price to pay is $16.22

Step-by-step explanation:

From the question, the regular price is $24.95

now, there is a discount

So the price to pay is the regular minus the discount

Mathematically, we have this as:

24.95 - 35% of 24.95

= 24.95 - 0.35(24.95)

= $16.2175

This is approximately $16.22

6 0

3 years ago