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3 years ago

How many different possible outcomes are there if you flip seven coins?

Mathematics

2 answers:

Brilliant_brown [7]3 years ago

8 0

Answer:

14 outcomes. you flip the coin 7 times and can only get 1 of 2 (headache or tails) 7 x 2 = 14

BARSIC [14]3 years ago

4 0

Answer:

Because the coin is tossed 7 times and you get 2 outcomes (head or tail) for each one.

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How do you solve an inequality like this/<br><br> x-2/x+16 ≥ 0

neonofarm [45]

$\bf \cfrac{x-2}{x+16}\ge 0\implies \stackrel{cross-multiplying}{x-2\ge (x+16)0}\implies x-2\ge 0\implies x\ge 2$

8 0

3 years ago

You are hiking along the California coast and wonder about the height of a particular Giant Redwood tree. You are 5

yulyashka [42]

Answer:

172.5

Step-by-step explanation:

Use similar triangles and a proportion.

(tree height)/(tree shadow length) = (your height)/(your shadow length)

x/(270 ft)= (5 ft 9 in.)/(9 ft)

x/(270 ft)= (5 ft + 9/12 ft)/(9 ft)

x/(270 ft)= (5.75 ft)/(9 ft)

9x = 270 * 5.75 ft

x = 30 * 5.75 ft

x = 172.5 ft

5 0

3 years ago

Is 23.6404 greater than 23.64112?

melamori03 [73]

Answer:

Step-by-step explanation:

23.64112 > 23.6404

Reason : 1/1000 place value in 23.64112 is 1.

1/1000 place value in 23.6404 is 0.

4 0

3 years ago

Read 2 more answers

PLS HELP WILL MARK BRAINLIST IF ANSWER IS CORRECT !! :) FILL IN THE BLANKS

andrew-mc [135]

Answer:

Part 1) The volume of the storage body is 576 cubic feet

Part 2) To find out how many boxes can she fit in the storage body, divide the volume of the storage body by the volume of each box

Part 3) Sheila can fit 64 boxes into the truck

Step-by-step explanation:

step 1

Find the volume of the storage body

we know that

The volume of the of the storage body is equal to the volume of two rectangular prism

The volume of a rectangular prism is equal to

$V=LWH$

First rectangular prism (top)

$V=(15)(6)(8-6)=180\ ft^3$

Second rectangular prism (bottom)

$V=(15-4)(6)(6)=396\ ft^3$

The volume of the storage body is

$V=180+396=576\ ft^3$

step 2

we know that

To find out how many boxes can she fit in the storage body, divide the volume of the storage body by the volume of each box

step 3

substitute the given values

$\frac{576}{9}= 64\ boxes$

therefore

Sheila can fit 64 boxes into the truck

7 0

3 years ago

A carpet company advertises that it will deliver your carpet within 15 days of purchase. A sample of 49 past customers is taken.

Novosadov [1.4K]

Answer:

a) $H_0: \mu\leq15\\\\H_1: \mu>15$

b) The z-value (1.5) is smaller than z=1.645 (critical value), so it is in the "acceptance region". It failed to reject the null hypothesis.

c) The p-value (0.07) is greater than the significance level (0.05), so it failed to reject the null hypothesis.

d) In this case, the error we may hae comitted is a Type II error (failed to reject a null hypothesis that is false).

Step-by-step explanation:

We have to perfomr a hypothesis test on the mean, with known standard deviation of the population.

a) The null hypothesis is that the deliver time is 15 days or less.

The null and alternative hypothesis are then:

$H_0: \mu\leq15\\\\H_1: \mu>15$

The significance level is defined as 0.05.

b) The critical value of z for a one-side test (rigth side) and a significance level of 0.05 is z=1.645.

If the z-value for this sample is higher than 1.645, it is in the "rejection region".

Calculating the z-value:

$z=\frac{M-\mu}{\sigma/\sqrt{n}}=\frac{16.2-15}{5.6/\sqrt{49}}=\frac{1.2}{0.8}=1.5$

The z-value (1.5) is smaller than z=1.645 (critical value), so it is in the "acceptance region". It failed to reject the null hypothesis.

c) The p-value for z=1.5 is:

$P(z>1.5)=0.067$

The p-value (0.07) is greater than the significance level (0.05), so it failed to reject the null hypothesis.

d) There are two types of error:

Type I errors: happen when we reject a null hypothesis that is true.

Type II errors: happen when we failed to reject a null hypothesis that is false.

In this case, the error we may hae comitted is a Type II error.

3 0

3 years ago