All categories

2 years ago

18÷0.45

Mathematics

2 answers:

melomori [17]2 years ago

7 0

Answer:

it is 40

Step-by-step explanation:

0.45 can go into 18 40 times

atroni [7]2 years ago

7 0

Answer:

Step-by-step explanation:

0.45 goes into 18 forty times

You might be interested in

This week Kent worked 15 hours at $12.50 an hour. His paycheck, including his commission, was $263.85. Ken wants to

EastWind [94]

Answer:

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Pls can u help me this is due now T-T

Artist 52 [7]

Answer:

SOLUTION: X=5

Step-by-step explanation:

x=5

y=27

vertical input= (0, 1/9)

Hope that helps!

5 0

3 years ago

Find the total future amount for $500 invested at 3.35% for 4 years compounded monthly.

weeeeeb [17]

Answer:

$ 746.16

Step-by-step explanation:

MONTHLY interest = .0335/4

4 years = 48 months

500 ( 1 + .0335/4)^48 = 746.16

7 0

2 years ago

A puppy is tied to a leash in a back yard. His leash is 3 meters long, and he runs around in circles pulling the leash as far as

Harlamova29_29 [7]

its 9 meters and 20

6 0

3 years ago

Read 2 more answers

A Pew Internet poll asked cell phone owners about how they used their cell phones. One question asked whether or not during the

EastWind [94]

Answer:

a) $\hat p=\frac{471}{1024}=0.460$

The standard error is given by:

$SE= \sqrt{\frac{\hat p(1-\hat p)}{n}}=\sqrt{\frac{0.460(1-0.460)}{1024}}=0.0156$

And the margin of error is given by:

$ME=z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}=1.96\sqrt{\frac{0.460(1-0.460)}{1024}}=0.0305$

b) The 99% confidence interval would be given by (0.429;0.491)

Step-by-step explanation:

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The population proportion have the following distribution

$p \sim N(p,\sqrt{\frac{p(1-p)}{n}})$

Data given and notation

n=1024 represent the random sample taken

X=471 represent the people responded that they had used their cell phone while in a store within the last 30 days to call a friend or family member for advice about a purchase they were considering

$\hat p=\frac{471}{1024}=0.460$ estimated proportion of people responded that they had used their cell phone while in a store within the last 30 days to call a friend or family member for advice about a purchase they were considering

p= population proportion of people responded that they had used their cell phone while in a store within the last 30 days to call a friend or family member for advice about a purchase they were considering

Part a

The confidence interval would be given by this formula

$\hat p \pm z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}$

For the 95% confidence interval the value of $\alpha=1-0.95=0.05$ and $\alpha/2=0.025$ , with that value we can find the quantile required for the interval in the normal standard distribution.