Round each number to the nearest hundred thousand 179,426 2

A 2005 survey found that 7% of teenagers (ages 13 to 17) suffer from an extreme fear of spiders (arachnophobia). At a summer cam

bagirrra123 [75]

Answer:

Probability that at least one of them suffers from arachnophobia is 0.5160.

Step-by-step explanation:

We are given that a 2005 survey found that 7% of teenagers (ages 13 to 17) suffer from an extreme fear of spiders (arachnophobia).

Also, At a summer camp there are 10 teenagers sleeping in each tent.

Firstly, the binomial probability is given by;

$P(X=r) =\binom{n}{r}p^{r}(1-p)^{n-r} for x = 0,1,2,3,....$

where, n = number of trials(teenagers) taken = 10

r = number of successes = at least one

p = probability of success and success in our question is % of

the teenagers suffering from arachnophobia, i.e. 7%.

Let X = Number of teenagers suffering from arachnophobia

So, X ~ $Binom(n= 10,p=0.07)$

So, probability that at least one of them suffers from arachnophobia

= P(X >= 1) = 1 - probability that none of them suffers from arachnophobia

= 1 - P(X = 0) = 1 - $\binom{10}{0}0.07^{0}(1-0.07)^{10-0}$

= 1 - (1 * 1 * $0.93^{10}$ ) = 1 - 0.484 = 0.5160 .

Therefore, Probability that at least one of them suffers from arachnophobia is 0.5160 .

3 0

3 years ago

66 is what%of 74 just wanna know what grade I got it isn't telling me. and also I am not using google cause I want someone to ge

Elodia [21]

Hello!

Let's write this as an equation.

74x=66

Now let's solve by dividing both sides by 74.

x≈0.89

Now we multiply by 100 to make it a percent.

0.89(100)= 89

Therefore, our answer is 89%

I hope this helps!

8 0

4 years ago

List the markup and retail price of each item. Round to two decimal places when necessary. A shirt item price is $33.75 and the

kifflom [539]

Answer:

markup price = $25.31

retail price = $59.06

Step-by-step explanation:

Markup price is 75% OF 33.75

Retail price is original price (33.75) PLUS the markup price (to be found)

Firstly, converting a percentage to a decimal is simple. We simply divide by 100. So:

75% = 75/100 = 0.75

Now, to find markup, we multiply:

33.75 * 0.75 = $25.31

Now, the retail price is SUM of original and markup, that would be:

retail price = 33.75 + 25.31 = $59.06

Thus,

markup price = $25.31

retail price = $59.06

4 0

4 years ago

Inequality the difference of2and a number is at least negetive 1

geniusboy [140]

An inequality where the difference between 2 and a number is at least negative 1 will be x - 2 ≥ -1.

<h3>What is the inequality?</h3>

The first part of the inequality is that there is a difference between a number and 2.

Assuming that number is 2, the first part is:

x - 2

The result of this subtraction at least negative 1. When a number is at least a number, it means that it is either that number or larger.

So the total inequality is:

x - 2 ≥ -1

Find out more on inequalities at brainly.com/question/16914953.

#SPJ1

7 0

2 years ago

What's the answer to the top one and the bottom one?

Zinaida [17]