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4 years ago

For the following assignment:  

Mathematics

1 answer:

STatiana [176]4 years ago

7 0

Answer:

Step-by-step explanation:

Here population is the people as a whole who use telephone.

Sample is the 118 people with eye cancer surveyed and 475 in control group without the disease.

b) Family history, parents having cancer, other habits such as smoking, or alcohol are lurking variables.

c) We can generalize the findings to all people by

i) increasing sample size. The maximum sample size the less the error.

ii) Samples taken at strictly random procedure without any bias

iii) samples taken over a spread population of various regions, countries, cultures, food habits, etc.

iv) Grouping into persons with smoking, with alcohol, etc will improve the results by reducing the variation due to lurking variables.

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kenny6666 [7]

Answer:

it means that you have to multiply all those things

Step-by-step explanation:

then you'll get the answer which is hard

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3 years ago

PLEASE PLEASE PLEASE HELP!!!

BigorU [14]

Answer:

Step-by-step explanation:

The percent markup is basically how much it is MORE than the original.

First, we need to find how much the selling price is more than cost.

Cost = 22.99

Selling Price = 36.99

Markup = 36.99 - 22.99 = $14

How much is the markup, we just found, with respect to cost? That is the markup divided by cost, multiplied by 100 [to convert to percentage]. Shown below:

$\frac{14}{22.99}*100=60.9$

So, the percent markup = 60.9%

Answer choice C is right.

5 0

3 years ago

In a study of pleas and prison sentences, it is found that 6060% of the subjects studied were sent to prison. Among those sent

Dovator [93]

Answer:

a. 40 %

b. 34.3 % ( approx )

Step-by-step explanation:

Let S is the event of the subjects studied that were sent to prison,

S' is the event of the subjects studied that won't sent to prison,

G is the event of pleading guilty,

G' is the event of not pleading guilty,

According to the question,

P(S) = 60% = 0.6 ⇒ P(S') = 1 - P(S) = 1 - 0.6 = 0.4,

P(S∩G) = 46% of 60% = 0.46 × 0.60 = 0.276,

P(S'∩G) = 36% of 40% = 0.36 × 0.40 = 0.144,

P(G) = P(S∩G) + P(S'∩G) = 0.276 + 0.144 = 0.42

a. The of getting someone who was not sent to prison, P(S') = 0.4,

b. the probability that this person was not sent to prison when it is given that the subject entered a guilty plea,

$P(\frac{S'}{G})=\frac{P(S'\cap G)}{P(G)}=\frac{0.144}{0.42}\approx 0.343=34.3\%$

7 0

4 years ago

What is the solution to the inequality?

AURORKA [14]

5x +8 >-12
5x > -20
x> -4
the answer is B

6 0

4 years ago

Jason and Jill or two students in mr. White's math class. On the last 5 quizzes Jason scored an 80 90 95 85 and 70. Jill scored

Mrac [35]

Jason's scores : 80 90 95 85 70 and

Jill's score : 70 75 90 100 95.

Mean of Jason's scores = $\frac{80 + 90 + 95 + 85 + 70}{5}=\frac{420}{5}=84.$

Mean of Jill's scores = $\frac{70+75+90+100+95}{5}=\frac{430}{5}=86$

Now, in order to find the mean absolute deviation, need to find the difference of each score from means.

<u>Mean absolute deviation for Jason's scores.</u>

|84-80| = 4

|84-90| = 6

|84-95| = 9

|84-85| = 1

|84-70|= 14

$\frac{4+6+9+1+14}{5}=\frac{34}{5}=6.8$

<u>Mean absolute deviation for Jill's scores</u>

|86-70| = 16

|86-75| = 11

|86-90| = 4

|86-100| = 14

|86-95|= 9

$\frac{16+11+4+14+9}{5}=\frac{54}{5}=10.8$

Jill got average quiz score 86 and Jason got 84.

Therefore, Jill got better quiz average.

Also, the mean absolute deviation for Jason scores is less that is 6.8 than 10.8.

Therefore, Jason got more consistent grades.

8 0

4 years ago