3 years ago

A, b, c, d, e, f, g, uh what comes next

Mathematics

1 answer:

Alborosie3 years ago

4 0

H,I,j,k,l,m,o,p,q,r,s,t,v,w,x,y,z

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insurance company checks police records on 559 accidents selected at random and notes that teenagers were at the wheel in 91 of

ss7ja [257]

Answer: $(13.22\%,\ 19.34\%)$

Step-by-step explanation:

Given : Sample space : n= 559

Sample proportion : $\hat{p}=\dfrac{91}{559}=0.162790697674\approx0.1628$

$=16.28\%$

Significance level : $\alpha= 1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.96$

Confidence level for population proportion:-

$\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\\\\=0.1628\pm (1.96)\sqrt{\dfrac{0.1628(1-0.1628)}{559}}\\\\=0.1628\pm0.030604971367\\\\\approx 0.1628\pm0.0306=(0.1322,\ 0.1934)=(13.22\%,\ 19.34\%)$

Hence, 95% confidence interval for the percentage of all auto accidents that involve teenage drivers.= $(13.22\%,\ 19.34\%)$

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4 years ago

Someone help me please!

Dvinal [7]

Answer:

The radius is 25 cm

Step-by-step explanation:

Area = $\pi$ * r^2

Area = 625 * $\pi$

625 $\pi$ = $\pi$ * r^2 The $\pi$ s cancel out

r^2 = 625 Take the square roots of both sides

sqrt(r^2) = sqrt(625)

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3 years ago

Write 6 1/3 as an improper fraction.

Anarel [89]

Answer:

19/3

Step-by-step explanation:

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3 years ago

What is 67840000000 in scientific notation ?

Ainat [17]

Answer:

6.784 × 10¹⁰

Step-by-step explanation:

→ First count the number of 0's

0000000 = 7 zero's

→ Count how many decimal places until a single digit

6.784 = 3 decimal places

→ Add the number of zero's with the decimal place's

7 + 3 = 10

6.784 × 10¹⁰

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4 years ago

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