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
____ [38]
3 years ago
5

Suppose that the ages of cars driven by employees at a company are normally distributed with a mean of 8 years and a standard de

viation of 3.2 years.
What is the z-score of a car that is 9.1 years old?
Mathematics
2 answers:
choli [55]3 years ago
6 0

There follows the formula for "z-score:"

raw score - mean

z = ------------------------------

standard dev

9.1 - 8

Here, the z-score is z = ------------- = 0.344

3.2

11111nata11111 [884]3 years ago
6 0

Answer: The z-score of a car is 0.34375.

Step-by-step explanation:

Since we have given that

The ages of cars driven by employees at a company are normally distributed.

Mean = \mu = 8 years

Standard deviation = \sigma = 3.2 years

Age of car = X = 9.1 years old.

We  need to find the z-score of a car which is given by

z=\frac{X-\mu}\sigma}\\\\z=\frac{9.1-8}{3.2}\\\\z=\frac{1.1}{3.2}\\\\z=0.34375

Hence, the z-score of a car is 0.34375.

You might be interested in
a map has a scale of 2in: 6mi. if a two twons on a map is 10 in apart then how far apart are the real twons
Brilliant_brown [7]

Answer:  30 miles

Work Shown:

2 in : 6 mi

5*2 in : 5*6 mi

10 in : 30 mi

7 0
2 years ago
What is the average size of a toothpick
Tanzania [10]
About less than 3 inches :)
4 0
3 years ago
Read 2 more answers
explain how the singular forms of morning, night, monday, and tuesday may be changed to the plural forms every-morning every-nig
Rus_ich [418]

Besides using the word "every" before the singular forms of the words above, they can also be changed to their plural forms by adding "s" behind them. For example "morning" becomes "mornings".

<h3>

Plural form of Morning in a Sentence</h3>

  • He works mornings. or
  • Mornings, I like to exercise.

Other examples related to the words above are:

  • The Tuesdays in March are going to be very busy.
  • The nights I spent on the voyage was blissful.

See the link below for more about the Plural forms:

brainly.com/question/586494

5 0
2 years ago
Presbycusis is the gradual hearing loss that occurs as a person ages. An estimated one-quarter of Americans between the ages of
svetlana [45]

Answer:

The answer is the "Null hypothesis and Alternative hypothesis".

Step-by-step explanation:

The null hypothesis is almost like a hypothesis test, which indicates the certain demographic characteristics which aren't varied.

The alternative presumption will be that the hypothesis besides making predictions is opposite to the void assumption. Its posts are generally taken as a result of a meaningful effect.

Difference:

The null hypothesis is indeed a gross generalization, which specifies there is no relation between different phenomenons under evaluation. There is no association between the two groups. An alternate solution hypothesis is a statement, that defines there is a relation between different chosen variables in this study.

3 0
3 years ago
Which expression is equivalent to -8 - (-12)<br> 8 - 12 <br> -8 + 12<br> -8 - 12<br> -8 (8+12)
aleksley [76]

I need help with this too it’s confusing and I don’t understand it.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Find the measures of an interior angle and an exterior angle of a regular polygon with 6 sides.
    15·1 answer
  • Suppose that the national average for the math portion of the College Board's SAT is 515. The College Board periodically rescale
    8·1 answer
  • In the figure, the measure of Angle 8 = 96 and the measure of Angle 12 =42. Find the measure of Angle 9.
    15·1 answer
  • Algebra 2 please help
    9·1 answer
  • 2. Kervins is $28 in debt because he borrowed money to buy food after school. He plans to pay back his debt at a rate of $7 per
    7·1 answer
  • Please help! it would be much appreciated
    5·1 answer
  • Can someone please help on this question
    12·1 answer
  • What is the approximate area of the circle shown?
    14·1 answer
  • What divided by 4 equals 12
    8·2 answers
  • Halle la ecuación del eje x y la ecuación del eje y, usando dos puntos que se encuentren sobre los mismos.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!