1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Olegator [25]
3 years ago
11

2.

Mathematics
1 answer:
Leviafan [203]3 years ago
4 0

Answer:

The unit rate is 35 miles per hour

Step-by-step explanation:

You might be interested in
Gina wrote the number 43,628. Then she used the same digits to write a new number. In the new number, she moved the digit 6 one
vivado [14]
The 1,000s place because she was in the 100s and you moved 6 to the left which makes the number higher.
3 0
3 years ago
Read 2 more answers
Help me please help me help please me please pleases me please please help
kifflom [539]

Answer:

the answer is 15/14 when you add them

7 0
2 years ago
Read 2 more answers
Tell whether the statement "All integers are rational numbers" is true or false. Explain your choice.
Y_Kistochka [10]

Answer:

True, all integers are rational numbers.

Step-by-step explanation:

Because each integer can be written as n/1 and integers can be positive and negative. For example, 3= 3/1 , 3 is the rational number. But all rational numbers like 1/2 =0.5 are not an integer. (fractions, decimals are not integers.)

6 0
2 years ago
Slices of pizza for a certain brand of pizza have a mass that is approximately normally distributed with a mean of 67.7 grams an
Alexxx [7]

Answer:

<u>a. s.e. = 0.338</u>

<u>b. The  probability of finding a random slice of pizza with a mass of less than 67.2 grams is 0.5871 or 58.71%</u>

<u>c. The probability of finding a 20 random slices of pizza with a mean mass of less than 67.2 grams is 0.0694 or 6.94%</u>

d. <u>The sample mean of 62.75 would represent the 15th percentile</u>

Step-by-step explanation:

1. Let's review the information provided to us to answer the question properly:

μ of the mass of slices of pizza for a certain brand = 67.7 grams

σ of the mass of slices of pizza for a certain brand = 2.28 grams

2. For samples of size 20 pizza slices, what is the standard deviation for the sampling distribution of the sample mean?

Let's recall that the standard deviation of the sampling distribution of the mean is called the standard error of the mean and its formula is:

μσs.e.= √σ/n, where n is the sample size.

s.e. = √2.28/20

<u>s.e. = 0.338</u>

3. What is the probability of finding a random slice of pizza with a mass of less than 67.2 grams?

Let's find the z-score for X = 67.2, this way:

z-score = (X - μ)/σ

z-score = (67.2 - 67.7)/2.28

z-score = 0.5/2.28

z-score = 0.22 (rounding to the next hundredth)

Now, using the z-table, let's find p, the probability:

p (z = 0.22) = 0.5871

<u>The  probability of finding a random slice of pizza with a mass of less than 67.2 grams is 58.71%</u>

4.  What is the probability of finding a 20 random slices of pizza with a mean mass of less than 67.2 grams?

Let's use the central limit theorem to find the z-score, this way:

z-score = X - μ/s.e

z-score = 67.2 - 67.7/0.338

z-score = -0.5/0.338

z-score = - 1.48

Now, using the z-table, let's find p, the probability:

<u>p (z = -1.48) = 0.0694</u>

5. What sample mean (for a sample of size 20) would represent the bottom 15% (the 15th percentile)?

For p = 0.150, let's find the z-score:

z-score = - 2.17

z-score = X - μ/s.e

- 2.17 = (X - 67.7)/2.28

- 4.95 = X - 67.7

X = 67.7 - 4.95

X = 62.75 (rounding to the next hundredth)

<u>The sample mean of 62.75 would represent the 15th percentile</u>

7 0
2 years ago
Consider a biased coin with the probability of turning up head 0 &lt; p &lt; 1. We flip the coin 10 times and get a sequence of
qwelly [4]

Answer:

Probability of obtaining 6H and 4T = 0.2051

Step-by-step explanation:

Since for a fair coin,

Probability of obtaining Head = 0.5

p = 0.5

q = 1-p = 0.5

Probability of obtaining 6H and 4T = 10C6 (p)^6(q)^4 = 210*0.5^6*0.5^4

P(6H, 4T) = 0.2051

8 0
3 years ago
Other questions:
  • Economics and finance. some of the variables that affect the monthly payment of a new-car loan are the total amount borrowed, th
    10·1 answer
  • Complete the missing value in the solution to the equation.
    8·1 answer
  • Heart beats 2400 times during 20 minutes of running. While resting you record your heart beating 17 times in 15 seconds. What is
    11·2 answers
  • I need the steps on how to get the answer to 7 divied by 6.93
    13·1 answer
  • What is the two equivalent forms for 0.24
    5·2 answers
  • How many terms are in the expression 3x^6yz+x^4y^2+2xz^5-6x^2y^3-7y
    13·2 answers
  • Add Each pair of expressions<br> (4x-7) and (7-4x)<br> Answer ASAP
    10·2 answers
  • Select all that apply.
    10·1 answer
  • What is the value of x in the equation 3x - 4y=65,<br> when y=4?
    6·1 answer
  • Solve the above attached question<br><br><br>Thanks​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!