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3 years ago

PLS I'LL DIRECTLY MARK YOU BRAINLIST (OPTIONS ARE ON THE SECOND SLIDE )

Mathematics

1 answer:

antoniya [11.8K]3 years ago

7 0

The answer is A
Plz mark brainliest

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Use the sample data and confidence level given below to complete parts a through d.

Sholpan [36]

Answer:

Step-by-step explanation:

Given that a research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n=1096 and x=542 who said yes.

i.e. sample size = $n=1096\\$

who said yes = $x=542\\$

Sample proportion = $p=\frac{542}{1096} =0.4945$

Std error of proportion = $\sqrt{\frac{p(1-p)}{n} } \\=\sqrt{\frac{0.4945(1-0.4945)}{1096} } \\=0.0151$

Margin of error 95% $= 1.96 (se)\\=0.0296$

Hence confidence interval for proportions

= $(0.4945-0.0296, 0.4945+0.0296)\\= (0.4649,0.5241)$

a) Point estimate $=0.4945$

B) Margin of error = $0.0296$

C) Conf interval = $(0.4649,0.5241$

D) We are 95% confident that for large random samples representing the population, the proportion of yes will lie between these two values.

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3 years ago

james,priya,and slobhan work in a grocery store.james makes $7.00 per hour . priya makes 20% more than jaimes,and slobhan makes

qaws [65]

Slobhan makes $3.78 per hour

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4 years ago

Tony is evaluating his retirement savings. He currently has $318,000 in his account which earns an interest rate of 7% compounde

castortr0y [4]

Answer:

(1) $A(t)= 318000(1.07)^t$

(3)t=16.93 years

Step-by-step explanation:

For a Principal Saved at Compound Interest, the Amount accrued is derived by the function:

$A(t)= P(1+r)^t$

When:

(1)P=$318,000

r=7%=0.07

$A(t)= 318000(1+0.07)^t\\A(t)= 318000(1.07)^t$

(2)See Attachment

(3)If Tony's goal is to save $1,000,000.

$1000000= 318000(1.07)^t\\(1.07)^t=\frac{1000000}{318000} \\(1.07)^t=3.1447\\Log_{1.07}\frac{1000000}{318000}=t\\t=16.93$

(4)The graph confirms the result as the $1000000 Mark on the y-axes occurs almost at x=17

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3 years ago

You start a new business. The location costs $100,000 to rent for one year. The items cost you $12 to make. You sell the items f

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Answer:my stuff is gliched

Step-by-step explanation:

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3 years ago

What is the midpoint of a line segment with endpoints at (0,-4) and (0,4)?

azamat

Answer: (0,0)

Step-by-step explanation:

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3 years ago