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3 years ago

Just the answer please

Mathematics

1 answer:

Sliva [168]3 years ago

3 0

48f2−110f+63 is the answer! :)

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If you run 5346m on the morning and 4536cm in the evening every day. How man kilometers will you run in 11 day?

s2008m [1.1K]

Answer:59.3km

Step-by-step explanation:

Convert 5346m to km to give= 5.346km

Then 4536cm to km gives 0.04536km

Total 5.39136km/day

In eleven days, multiply km per day by 11

It gives 59.3km

5 0

3 years ago

A study1 conducted in July 2015 examines smartphone ownership by US adults. A random sample of 2001 people were surveyed, and th

dusya [7]

Answer:

a) Null hypothesis: $p_{1} = p_{2}$

Alternative hypothesis: $p_{1} \neq p_{2}$

b) $z=\frac{p_{1}-p_{2}}{\sqrt{\hat p (1-\hat p)(\frac{1}{n_{1}}+\frac{1}{n_{2}})}}$ (1)

Where $\hat p=\frac{X_{1}+X_{2}}{n_{1}+n_{2}}=\frac{688+671}{989+1012}=0.679$

c) $z=\frac{0.696-0.663}{\sqrt{0.679(1-0.679)(\frac{1}{989}+\frac{1}{1012})}}=1.58$

d) For this case we see that $\hat p_1 > \hat p_2$ so then the answer for this cae would men

Step-by-step explanation:

Information given

$X_{1}=688$ represent the number of men with smartphone

$X_{2}=671$ represent the number of women with smartphone

$n_{1}=989$ sample of men selected

$n_{2}=1012$ sample of women selected

$p_{1}=\frac{688}{989}=0.696$ represent the proportion of men with smartphone

$p_{2}=\frac{671}{1012}=0.663$ represent the proportion of women with smartphone

$\hat p$ represent the pooled estimate of p

z would represent the statistic

$p_v$ represent the value

Part a

We want to test if we have difference in the proportion owning a smartphone between men and women, the system of hypothesis would be:

Null hypothesis: $p_{1} = p_{2}$

Alternative hypothesis: $p_{1} \neq p_{2}$

Part b

The statistic for this case is given by:

$z=\frac{p_{1}-p_{2}}{\sqrt{\hat p (1-\hat p)(\frac{1}{n_{1}}+\frac{1}{n_{2}})}}$ (1)

Where $\hat p=\frac{X_{1}+X_{2}}{n_{1}+n_{2}}=\frac{688+671}{989+1012}=0.679$

Part c

Replacing the info given we got:

$z=\frac{0.696-0.663}{\sqrt{0.679(1-0.679)(\frac{1}{989}+\frac{1}{1012})}}=1.58$

Part d

For this case we see that $\hat p_1 > \hat p_2$ so then the answer for this cae would men

4 0

3 years ago

For a repeated-measures study comparing three treatment conditions with a sample of n = 4 participants, the participant totals (

KengaRu [80]

Repeated measures study is when participants of the first treatment are still the participants of the second treatment either to see the effects of the variable. Thank you for your question. Please don't hesitate to ask in Brainly your queries.

8 0

3 years ago

16) F(-3,-2), 1(-4, 3), A(-2, 3), M(1,-1) to I(-4, -3), A(-2, -3), M(1, 1), F(-3, 2)

pantera1 [17]

Answer:

(234/efr335)-k29504

Step-by-step explanation:

3 0

3 years ago

A man received a salary of 4920 naira in two years. If he was paid the same amount each month what was the monthly salary

steposvetlana [31]

Answer:

205 per month

Step-by-step explanation:

4920/(12x2)

5 0

3 years ago