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Xelga [282]
3 years ago
8

In a random sample of 85 people attending a workshop, 63 of the respondents said the workshop was useful. What is the sample pro

portion of the people who said the workshop was useful?
Mathematics
2 answers:
SVETLANKA909090 [29]3 years ago
8 0
Divide the number of respondents saying it was useful by the total number
63/85 = 0.74
aksik [14]3 years ago
3 0

Answer:

\frac{63}{85} = 0.741.

Step-by-step explanation:

Given : In a random sample of 85 people attending a workshop, 63 of the respondents said the workshop was useful.

To find : What is the sample proportion of the people who said the workshop was useful.

Solution : We have given that :

People attending workshop = 85.

Respondents said the workshop was useful = 65 .

Proportion   = \frac{number\ of\ people\ who\ said\ useful}{total\ peoples}.

Proportion : \frac{63}{85}.

Proportion : 0.741

Therefore,  \frac{63}{85} = 0.741.

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In order to estimate the mean amount of time computer users spend on the internet each month, how many computer users must be su
prisoha [69]

Answer:

1568

Step-by-step explanation:

The computation of the minimum sample size is shown below:

Given that

Error E = 11

The population standard deviation \sigma =217

Confidence level 1-α = 95%

Now following formula should be used

n > (Zalpha ÷ 2 × sigma ÷ E)^2

As we know that

Zalpha ÷ 2= 1.96

Now the sample size is

n> (1.96 × 202  ÷ 10)^2

= 1568

6 0
2 years ago
If y2 = x3 + 2, which statement is true? The equation is a function at all values of x. The equation is not a function. The equa
tatyana61 [14]

Answer:

The equation is not a function.

Step-by-step explanation:

We are given that

y^2=x^3+2

y=\pm\sqrt{x^3+2}

Function: It is mapping between the values of two sets A and B.

Each element of A has unique value in set B.

By definition of  function

In given function

y has no unique value for each value of x.

Substitute x=0

y=\pm \sqrt{0+2}=\pm \sqrt 2

Hence, it is not a function.

6 0
3 years ago
What is negative 48 plus 14
leva [86]

Answer: negative 34

Step-by-step explanation:

just take away 14 to 48 and put a negative infront

7 0
3 years ago
A rectangular lawn 70m by 50m has two cross roads each 6m wide running in the
ser-zykov [4K]
Area of road =70*50=3500
3500*2=7000 because it has cross road
6*6=36
7000-36=6964
6964*5.50=38302
6 0
2 years ago
Let set C = {1, 2, 3, 4, 5, 6, 7, 8} and set D = {2, 4, 6, 8}.
g100num [7]
<span>1. If it is intersection then it SHOULD be included in both the sets right? Now we know that odd numbers from 1-100 but the second set are multiples of 5 from 50-150! So we mainly need to look for common numbers which are ODD and are a MULTIPLE OF 5 BETWEEN 50 - 100!! So A={51,53,57,59,61......99} B={55,60,65,70.......95} [We stop till 100 because set A has no such element] So what is A ∩ B here? A ∩ B = {All odd numbers and multiples of 5 between 50 - 100}

</span>
6 0
3 years ago
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