a.$642.23

c.$648.62

b.$645.65

d.$649.13

Answer:

**Answer:**

The answer is A: $642.23

**Step-by-step explanation:**

I just took the test lol

-5 1/2 + 6 3/4 + (-4 1/4)

5. What is the value of x if the quadrilateral is a kite? B X+2 C С 13 A Xth12 D

Seven more than twice a number is 23.

Suppose Barbara has a 20 minute commute and scores 67.4 on the survey. Is Barbara more 'well-off than the typical individual who has a 20-ml?

A researcher examines 27 sedimentary samples for bromide concentration. The mean bromide concentration for the sample data is 0.383 cc/cubic meter with a standard deviation of 0.0209. Determine the 90% confidence interval for the population mean bromide concentration. Assume the population is approximately normal. Step 1 of 2 : Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.

5. What is the value of x if the quadrilateral is a kite? B X+2 C С 13 A Xth12 D

Seven more than twice a number is 23.

Suppose Barbara has a 20 minute commute and scores 67.4 on the survey. Is Barbara more 'well-off than the typical individual who has a 20-ml?

A researcher examines 27 sedimentary samples for bromide concentration. The mean bromide concentration for the sample data is 0.383 cc/cubic meter with a standard deviation of 0.0209. Determine the 90% confidence interval for the population mean bromide concentration. Assume the population is approximately normal. Step 1 of 2 : Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.

twice a number and four.

The required expression for Nine less than the **quotient **of twice a number and four gives the **equation**, y =2x/4 - 9.

An expression Nine less than the **quotient **of twice a number and four. is to be determined.

The process in mathematics to **operate **and **interpret **the **function **to make the function simple or more understandableis called **simplify **and the process is called **simplification**.

The **quotient **is the result when one value gets **divided **by some other value.

Using simple arithmetic,

Let the number be x,

A number y is equal to nine less than the quotient of twice of x and four. So,

y = **quotient **of 2x and four - 9

y = 2x/4 - 9

Thus, the required expression for Nine less than the **quotient** of twice a number and four gives the **equation**, y =2x/4 - 9.

Learn more about **simplification **here: brainly.com/question/12501526

**#SPJ5**

**Answer:**

-1

**Step-by-step explanation:**

Twice a number of 4 equals 8

4×2=8

less than 9 of the quotient (answer) of twice a number of 4, is -1

8-9= -1

**Answer:**

If the integer is in the range 1–15, then the weather could be declared rainy

**Step-by-step explanation:**

Assuming the integers are uniformly distributed 15 of them will constitute 30% of the possible integer. If the integer is in the range 1–15, then the weather could be declared rainy. That would make the probability of rain 30%, as required.

**Answer:**

**60 points.**

**Step-by-step explanation:**

Bar diagram which represents the ratio of the points earned by the home team and visitor's team.

Fro the bar diagram,

Ratio of the points earned =

=

If the points earned by the home team = 84

=

=

Points earned by the visitor's team =

= 60

Therefore, 60 points were earned by the visitor's team.

To find out the answer to this, you could do it one of 2 ways.

1. You could change both to a decimal and subtract them or

2. You could treat them as fractions and subtract one from the other.

9/12 = 3/4 = 0.75 You could let your calculator do that

1/3 = 0.3333333

0.75 - 0.3333333 = 0.4166667

9/12 is bigger because you get a positive answer.

Or you could stick with the fractions

9/12 - 1/3

You need to put the 1/3 into a fraction over 12

9/12 - 4/12 = 5/12.

9/12 is still bigger because you get a positive result.

Either way can be done on a calculator, but both indicate that 9/12 > 1/3

9/12 is greater than 1/3

**Answer:**

**Step-by-step explanation:**

**Previous concepts**

**Beta distribution **is defined as "a continuous density function defined on the interval [0, 1] and present two parameters positive, denoted by α and β, both parameters control the shape. "

The probability function for the beta distribution is given by:

Where B represent the beta function defined as:

**Solution to the problem**

For our case our random variable is given by:

We can use the following R code to plot the distribution for this case:

> x=seq(0,1,0.01)

> plot(x,dbeta(x,5,2),main = "Beta distribution a=5, b=2",ylab = "Probability")

And we got as the result the figure attached.

And for this case we want this probability, since we want the probability that she has at most 10% or 0.1 change of winning:

And we can find this probability with the following R code:

> pbeta(0.1,5,2)

[1] 5.5e-05

And we got then this :

**Answer:**

82.62

**Step-by-step explanation:**

Mean score (μ) = 80

Standard deviation (σ) = 5

The 70th percentile of a normal distribution has an equivalent z-score of roughly 0.525.

For any given score, X, the z-score can be determined by:

For z = 0.525:

**A raw score of approximately 82.62 corresponds to the 70th percentile.**

Answer: the raw score that corresponds to the 70th percentile is 82.625

Step-by-step explanation:

Since the population of scores in the aptitude test is normally distributed., we would apply the formula for normal distribution which is expressed as

z = (x - µ)/σ

Where

x = aptitude test scores.

µ = mean score

σ = standard deviation

From the information given,

µ = 80

σ = 5

We want to find the raw score that corresponds to the 70th percentile.

70th percentile = 70/100 = 0.7

Looking at the normal distribution table, the z score corresponding to 0.7 is 0.525.

Therefore,

0.525 = (x - 80)/5

5 × 0.525 = x - 80

2.625 = x - 80

x = 2.625 + 80

x = 82.625