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andrew11 [14]
2 years ago
8

if I was born in 2007, and my mother was born in 1989. what is the difference between my mothers age and mine?

Mathematics
2 answers:
Inessa [10]2 years ago
7 0

Answer:

The age difference is 18

Step-by-step explanation:

Your mom might be 32 and you might be 14 so all you have to do is subtract 32-14 and you get 18

Delicious77 [7]2 years ago
3 0
If you were born in 2007 then now in 2022 you should be 15 years of age depending on when your birthday was.

Your mom should be 33 years of age

18 years difference if you were both born on the same day.
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PLEASE HELP!!iILL GIVE U 20 POINTS what is -4x+2(3x-6)
DIA [1.3K]

Answer:

2x +12

Step-by-step explanation:

-4x + 6x -12

5 0
3 years ago
A research program used a representative random sample of men and women to gauge the size of the personal network of older adult
My name is Ann [436]

Answer:

a. \mu=\bar x =14.6

b. The 95% CI for the population mean is (14.22, 14.98).

c. B. "The statement is incorrect. A correct statement would be​"One can be​ 95% confident that the true mean number of people named per person will fall in the interval computed in part b"

d. D. It does not impact the validity of the interpretation because the sampling space of the sample mean is approximately normal according to the Central Limit Theorem.

Step-by-step explanation:

a) The sample mean provides a point estimation of the population mean.

In this case, the estimation of the mean is:

\mu=\bar x =14.6

b) With the information of the sample we can estimate the

As the sample size n=2824 is big enough, we can aproximate the t-statistic with a z-statistic.

For a 95% CI, the z-value is z=1.96.

The sample standard deviation is s=10.3.

The margin of error of the confidence is then calculated as:

E=z\cdot s/\sqrt{n}=1.96*10.3/\sqrt{2824}=20.188/53.141=0.38

The lower and upper limits of the CI are:

LL=\bar x-z\cdot s/\sqrt{n}=14.6-0.38=14.22\\\\UL=\bar x+z\cdot s/\sqrt{n}=14.6+0.38=14.98

The 95% CI for the population mean is (14.22, 14.98).

c. "95% of the​ time, the true mean number of people named per person will fall in the interval computed in part b"

The right answer is:

B. "The statement is incorrect. A correct statement would be​"One can be​ 95% confident that the true mean number of people named per person will fall in the interval computed in part b"

The confidence interval gives bounds within there is certain degree of confidence that the true population mean will fall within.

It does not infer nothing about the sample means or the sampling distribution. It only takes information from a sample to estimate a interval for the population mean with certain degree of confidence.

d. It is unlikely that the personal network sizes of adults are normally distributed. In​ fact, it is likely that the distribution is highly skewed. If​ so, what​ impact, if​ any, does this have on the validity of inferences derived from the confidence​ interval?

The answer is:

D. It does not impact the validity of the interpretation because the sampling space of the sample mean is approximately normal according to the Central Limit Theorem.

The reliability of a confidence interval depends more on the sample size, not on the distribution of the population. As the sample size increases, the absolute value of the skewness and kurtosis of the sampling distribution decreases. This sample size relationship is expressed in the central limit theorem.

4 0
3 years ago
18 students are going on a field trip the bus can fit 14 so four of them will have to ride in a car and how many ways can we cho
Lostsunrise [7]

Answer:

Number of ways we can choose the four students who must ride in the car = 3060 ways

Step-by-step explanation:

This is a combination question.

The number of selections of "r" objects from the given "n" objects is denoted by;

C(n,r), and is given by;

C(n, r) = n!/[r!(n - r)!]

In this question, n = 18 and r = 4

Thus;

C(18, 4) = 18!/[4!(18 - 4)!]

C(18,4) = 3060

Number of ways we can choose the four students who must ride in the car = 3060 ways

4 0
3 years ago
Y= 8x + 168 show your work
malfutka [58]
Y=8x+168 is the answer
8 0
3 years ago
Find the area of the shaded region. Round your answer to the nearest hundredth.
valina [46]

Answer:

  • FIRSTLY GET THE AREA OF THE WHOLE CIRCLE BY USING FORMULA
  • pi \times r ^2
  • THEN AFTER THAT DIVIDE THE AREA BY 2
  • AFTER THAT UR ANSWER WILL COME

<em>PLEASE</em><em> </em><em>MARK ME AS BRAINLIEST</em><em> </em>

3 0
2 years ago
Read 2 more answers
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