Hi! I'm confused as to how to get the answer for this -> 3(y+7) = 2y

Every time a customer purchases a new computer, one month later they receive a survey in the mail. Eighty-five percent of the su

True [87]

Answer:

Respondents

Step-by-step explanation:

The customers that buy a new computer and receive a survey in the mail about the performance of the computer after one month are called respondents.

They are called respondents because they took part in a survey or poll about the performance of the computer they bought a month ago. Statistically, not everyone that got the mail took part in the poll, those ones are called non respondents, while the ones that took part in the survey are known as respondents.

4 0

3 years ago

Whats 10000 + 1 plus 2

MrMuchimi

1,000 + 1 =1,001 + 2 = 1,002
I hope this helps

7 0

4 years ago

Read 2 more answers

In the last mayoral election in a large city, 47% of the adults over the age of 65 voted Republican. A researcher wishes to dete

Yuliya22 [10]

Answer:

Null Hypothesis, $H_0$ : p = 47%

Alternate Hypothesis, $H_A$ : p $\neq$ 47%

Step-by-step explanation:

We are given that in the last mayoral election in a large city, 47% of the adults over the age of 65 voted Republican.

A researcher wishes to determine if the proportion of adults over the age of 65 in the city who plan to vote Republican in the next mayoral election has changed.

Let p = proportion of the population of all adults over the age of 65 in the city that plan to vote Republican in the next mayoral election.

So, Null Hypothesis, $H_0$ : p = 47%

Alternate Hypothesis, $H_A$ : p $\neq$ 47%

Here, null hypothesis states that the proportion of adults over the age of 65 in the city who plan to vote Republican in the next mayoral election is equal to 47%.

On the other hand, alternate hypothesis states that the proportion of adults over the age of 65 in the city who plan to vote Republican in the next mayoral election is different from 47%.

Also, The test statistics that will be used here is One-sample z proportion statistics;

T.S. = $\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }$ ~ N(0,1)

Hence, the researcher should test the above null and alternative hypotheses.

6 0

3 years ago

how many liters of a 10% silver iodide solution must be mixed with 3 L of a 4% silver iodine solution to get s 6% solution?

Vikentia [17]

To answer this problem, you should just substitute some figures in order to get the required amount.

So, let a be the amount of 10% iodide solution

So...

4 (3) + 10a = 6 (3+a)
[4 represents the silver iodine solution, the 3 is the liters, while we are looking for the 6% solution]

12 + 10a = 18 + 6a

10a - 6a = 18 - 12

4a = 6

a = 6/4
a = 3/2

So you will need 3/2 or 1.5 liters of 10% iodide solution.

4 0

4 years ago

A school did a survey among 100 students to find their sports preferences. The students were asked about their preferences for f

NikAS [45]

PART A:

Total of students who like football = 77 students
Students who like football and baseball = 48 students
Students who like football and not baseball = 77 - 48 = 29 students

Students who do not like football = 100 - 77 = 23 students

Students who like baseball = 65 students
Students who like baseball but not football = 65 - 48 = 17 students

Students who do not like baseball = 100 - 65 = 35 students

These data can be represented in a two ways table as shown below

PART B:

The number of students who do not like either football or baseball is 29+17+6=52

The probability is 52/100 = 52%

PART C:

The number of students who don't like football is 17+6=23 students
The number of students who don't like baseball is 35 students

The survey result reveals a greater dislike for baseball

6 0

3 years ago

Hi! I'm confused as to how to get the answer for this -> 3(y+7) = 2y - 5