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3 years ago

Lexie rolls a six-sided number cube 1200 times.

Mathematics

1 answer:

Bingel [31]3 years ago

5 0

Answer:

your answer is D lexie will roll an even number roughly 400 times but not exactly 400 times

hope this helps

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A random sample is selected from a normally distributed population. The following sample statistics are obtained: n = 20, = 30,

Flura [38]

Answer:

b) The margin of error is approximately 3.24

e) The critical value is 1.7921.

Step-by-step explanation:

Step(i):-

Given sample size 'n' =20

Given sample standard deviation 's' = 10

 Margin of error 

The margin of error is determined by

 $M.E = \frac{t_{\alpha } S.D }{\sqrt{n} }$ 

The level of significance ∝ =0.95

The degrees of freedom = n-1 = 20-1=19

t₀.₉₅ = 1.729

$M.E = \frac{1.729 X10 }{\sqrt{20} }$

Margin of error = 3.866

Step(ii):-

 Margin of error 

The margin of error is determined by

 $M.E = \frac{t_{\alpha } S.D }{\sqrt{n} }$ 

Given another sample size n =30

The level of significance ∝ =0.95

The degrees of freedom = n-1 = 30-1=29

t₀.₉₅ = 1.70

$M.E = \frac{1.7021 X10 }{\sqrt{30} } =3.24$

Margin of error = 3.24

5 0

4 years ago

Simplify 3a2 x 5b3 x 4a x 2c

sergey [27]

Here you go!! Hope this helps

6 0

3 years ago

You have $2 and earn $0.50 for each cup of lemonade you sell. Write an equation in two variables that represents the total amoun

Pani-rosa [81]

So because you will have $2 no matter how many cups you sell the equation starts off as AA = 2

Next, you add the dependent variable, because 1 cup of cc = $0.50 you add 0.5cc to the equation (it can also be written as 1/2cc), to complete the equation.
AA = 1/2cc +2

3 0

3 years ago

If you were to roll the dice one time what is the probability it will land on 4

vovangra [49]

Answer: 1/6

Step-by-step explanation: To find the probability of rolling a 4, let's use our ratio for the probability of an event which is shown below.

Number of favorable outcomes/total number of outcomes

Since only one side of a number cube has a 4 on it, the number of favorable outcomes for rolling a 4 is 1 and since there are six sides to a number cube and it's equally likely that the cube will land on any of these sides, the total number of outcomes is 6.

So the probability of rolling a 4 is 1/6 which is equivalent

to 0.167 or 16.7%.

That means it is't likely that you would roll a 4 for instance but it's just as likely as rolling any other number.

3 0

4 years ago

Read 2 more answers

The price increase of a set of golf clubs is from $250 to $750. What is the percent increase?

rjkz [21]

Answer:

300%

Step-by-step explanation:

3 times 250 is 750

3 0

4 years ago