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
Effectus [21]
3 years ago
5

The mean number of cars owned is 2 and the standard deviation is 0.80. Fiona owns 3 cars. What is her z score?a. 1.50b. 2.00c. 1

.25d. 2.25
Mathematics
1 answer:
jonny [76]3 years ago
7 0

Answer:

Her Z score is 1.25

Step-by-step explanation:

You might be interested in
What is the unit rate for 15 apples eaten in 5 minutes for 15 apples eaten in 5 minutes
USPshnik [31]

The unit rate is 3 apples per minute

Step-by-step explanation:

Unit rate will be calculated by dividing the total number of apples by the time

Given

Total number of apples = 15

Time = 5 min

So, The unit rate will be:

Unit\ rate=\frac{Apples}{Time}\\=\frac{15}{5}\\=3\ apples\ per\ min

Hence,

The unit rate is 3 apples per minute

Keywords: Unit rate, Division

Learn more about unit rate at:

  • brainly.com/question/4163549
  • brainly.com/question/4168505

#LearnwithBrainly

8 0
3 years ago
In a study published on January 31, 2011 in The Proceedings of the National Academy of Sciences, researchers randomly assigned 1
Kaylis [27]

Answer:

d.

Step-by-step explanation:

Hello!

The objective of this test is to know if aerobic exercise modifies hippocampus activity. A random sample of 120 elderly men and women was taken and divided into two groups.

Group 1: Walked around a track three times a week.

Group 2: Did a variety of less aerobic exercises, including yoga and resistance training with bands.

After a year their brains were scanned showing that group 1 had an increase of 2% in their hippocampus and group 2 showed a decrease of 1.4%

a. True, this type of observational study can be the prelude to a more formal statistical study.

b. True, the explanatory variable is "type of exercise", it's the variable that the investigator suspects influence the hippocampus volume.

c. True, the objective of this experiment is to test if there is any modification on hippocampus volume, that's why the volume of the hippocampus was measured, before and after a year of exercise.

d. False, this is an observational study, you cannot establish a causal relationship between the two variables. Just inform you that there seems to be an association. To be able to generalize the results to all elderly population you need a more formal statistical experiment to support your conclusions.

I hope it helps!

5 0
3 years ago
Is the underlined verb in the sentence transitive or intransitive?
Firlakuza [10]
A because everything after the verb is a preposition
3 0
3 years ago
Read 2 more answers
34% of _____ peaches is 17 peaches <br><br> Help please
lakkis [162]

Answer:

50

Step-by-step explanation:

34%=34/100

34/100 = 17/50

8 0
2 years ago
Read 2 more answers
Is the fraction 45/61 in the simplest form? Explain.​
Leona [35]

Answer: i think it is.

you cant divide both numbers by the same number

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • ariel is saving money for a new computer that costs $650. she has $150, which she puts into an account. then she adds $25 each w
    8·1 answer
  • Let p be the percent decrease in the price of a DVD recorder that is marked down from $500 to $400. Which proportion can be used
    6·1 answer
  • John left his house in Irvine at 8:20 AM to drive to a meeting in Los Angeles, 45 miles away. He arrived at the meeting at 9:50
    13·1 answer
  • A line passes through the point (-7,5) and has a slope of 1/2
    13·2 answers
  • How to identify the square roots of each term​
    7·1 answer
  • A rectangular garden is fenced on all sides with 258 feet of fencing. The garden is 7 feet
    5·1 answer
  • Joan will not score more than 6 points in the game
    8·1 answer
  • PLEASE HELP!!!<br>what is the length of segment SR? units​
    10·1 answer
  • Work out the mean.<br> 1, 3, 3. 4. 6, 9, 9
    9·2 answers
  • 1. 3x^2-7=31<br> 2. 2x^2+18=0<br> 3. 4x^2-26=-50<br> 4. 2x^2+36=x^2
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!