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3 years ago

Can someone help me with this please ?

Mathematics

2 answers:

Rudik [331]3 years ago

7 0

The first one is week 3 minus week 2 which is 3

valentina_108 [34]3 years ago

3 0

Answer:

putamadre

Step-by-step explanation:

noe s

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A recent poll of 700 people who work indoors found that 278 smoke. if the researchers want to be 98% confident of their results

Mice21 [21]

Answer:

We are given:

$\hat{p}=\frac{278}{700}=0.397$

$z_{\frac{0.02}{2}}=2.33$ is the critical value at 0.02 significance level

$E=0.035$ is the margin of error

Therefore, the required sample size is:

$n=\hat{p}(1-\hat{p}) \left(\frac{z_{\frac{0.02}{2}} }{E} \right )^{2}$

$=0.397(1-0.397) \left( \frac{2.33}{0.035} \right)^2$

$=0.239391 \times 4431.755102$

$=1060.922286 \approx 1061$

Therefore, the required sample size n = 1061

5 0

4 years ago

The owner of a local nightclub has recently surveyed a random sample of n = 300 customers of the club. She would now like to det

quester [9]

Answer:

We cannot determine the appropriate hypotheses to test this study because we are only given the data for the sample size and the population mean. Meanwhile, we need to know the data of the sample mean, the standard deviation and the level of significance before we can state the appropriate hypotheses for this test.

Step-by-step explanation:

Given that:

sample size n = 300

population mean μ = 35

The null hypothesis and the alternative hypothesis can be computed as follows:

Null hypothesis

$H_o: \leq 35$

Alternative hypothesis

$H_1 > 35$

The degree of freedom df = n -1

df = 300 - 1

df = 299

8 0

4 years ago

Write a two-column proof.

netineya [11]

Answer:

GLH is congruent to JLK as the quadrilateral is a parallelogram,

KJ = GH OR HJ = GK

GL = LJ OR. HL = LK

triangle JKG = GHJ

triangle HGK = KJH

6 0

3 years ago

Read 2 more answers

Which side lengths form a right triangle?

netineya [11]

So the right answer is of option A.

Look at the attached picture ⤴

Hope it will help u...

5 0

3 years ago

Question 23 of 25

kirza4 [7]

Answer: D

Step-by-step explanation:

because 7x7= 49

5 0

3 years ago