All categories

3 years ago

Doris takes a survey of her class and finds that 2 of the 20 students in class are left-handed.

1 answer:

6 0

Hey there, Alex!

She would expect 55 of them to be left handed.

Work: 550 / 20 = 27.5

27.5 x 2 = 55

Hope I was able to help!

You might be interested in

The circle is inscribed in triangle AEC. A circle is inscribed in triangle A E C. Points B, F, and D of the circle are on the si

I am Lyosha [343]

Answer:

EF and ED

CB and CD

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

You are an assistant director of the alumni association at a local university. You attend a presentation given by the university

NNADVOKAT [17]

Answer:

(0.102, -0.062)

Step-by-step explanation:

sample size in 2018 = n1 = 216

sample size in 2017 = n2 = 200

number of people who went for another degree in 2018 = x1 = 54

number of people who went for another degree in 2017 = x2 = 46

p1 = x1/n1 = 0.25

p2 = x2/n2 = 0.23

At 95% confidence level, z critical = 1.96

now we have to solve for the confidence interval =

$0.25 -0.23 ± 1.96*\sqrt{((1 - 0.25) * 0.25)/216 + ((1 - 0.23) *0.23/200}$

= 0.02 ± 1.96 * 0.042

= 0.02 + 0.082 = 0.102

= 0.02 - 0.082 = -0.062

There is 95% confidence that there is a difference that lies between - 0.062 and 0.102 on the proportion of students who continued their education in the years, 2017 and 2018.

There is no significant difference between the two.

5 0

3 years ago

A customer is late paying their renewal registration fee. The renewal registration fee is $142.16 and the late fee is 63% of the

Andre45 [30]

$124.56 because if you have 63% you change it to a decimal so it is not .63 and you multiply it by 146.16 and then add the 35 you get 124.56

8 0

3 years ago

Evaluate the function when x=-1 g (x) = 3x square 2 + 1 ?

finlep [7]

Answer:

Step-by-step explanation:

X = -1 so, we have:

3·1² + 1

3² + 1

9 + 1

5 0

3 years ago

Find the 12th term of the geometric sequence 1, –4, 16,

Digiron [165]

⇒ common ratio =r=3 and the given sequence is geometric sequence. Where an is the nth term, a is the first term and n is the number of terms. ⇒ 12th term is 708588 .

(May be wrong for some other users, although it's correct for me.)

7 0

3 years ago