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
Butoxors [25]
3 years ago
14

Suppose the board of directors for Cosmic Coffee wants to know the price range for the lowest 40% of drink sales. Find the z-sco

re associated with the upper boundary of of this price range.
Mathematics
1 answer:
antoniya [11.8K]3 years ago
8 0

Answer:

The z-score associated with the upper boundary of of this price range is -0.25.

Step-by-step explanation:

It is provided that the board of directors for Cosmic Coffee wants to know the price range for the lowest 40% of drink sales.

If <em>X</em> represents the price range of drink sales, then

P (X < x) = 0.40

Consider that <em>X</em> follows a Normal distribution.

To compute the probability of a normally distributed random variable we need to first convert the raw score to the <em>z</em>-scores.

The formula to <em>z</em>-score is:

z=\frac{X-\mu}{\sigma}

Then,

P (X < x) = 0.40

⇒ P (Z < z) = 0.40

The value of <em>z</em> for this probability is:

<em>z</em> = -0.25

*Use a <em>z</em>-table.

Thus, the z-score associated with the upper boundary of of this price range is -0.25.

You might be interested in
The total number of cats and dogs at the shelteris 125. there are 5 more cats than dogs
juin [17]
If you're looking for the number of dogs (I'm assuming, you didn't specify), all you'd have to do is divide the number by two, then round down to find the number of dogs, then check your answer by adding that number and that number plus 5.

For example, yours would look like 125/6=62.5, and rounding down to 60.

Then check your answer by adding 60 and 65, the number of cats. 60+65=125.

There are 60 dogs inside the kennel.
5 0
3 years ago
What is square root<br><img src="https://tex.z-dn.net/?f=what%20is%20%20%5C%3A%20square%20%5C%3A%20root%20%5C%3A%20of%20%20%5Csq
andreev551 [17]

Answer:

9 :)

Step-by-step explanation:

Simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.

7 0
2 years ago
Read 2 more answers
un aranjament floral din 4 lalele si 3 frezii costa 36 lei iar altul compus din 5 lalele si 6 frezii este egal cu 50 de lei afla
butalik [34]

Answer:

cred că 34 îmi pare rău că nu am un român bun ;w;

Step-by-step explanation:

6 0
2 years ago
Solve these algebraic fractions please with explanation would be great ​
Pavlova-9 [17]

Answer:

look above

Step-by-step explanation:

hope it helps

4 0
2 years ago
How coral polyps form a reef
Fofino [41]
Coral reefs<span> begin to </span>form<span> when free-swimming </span>coral<span> larvae attach to submerged rocks or other hard surfaces along the edges of islands or continents. As the </span>corals grow<span> and expand, </span>reefs<span> take on one of three major characteristic structures —fringing, barrier or atoll.</span>
8 0
3 years ago
Other questions:
  • What the value 0 in degrees
    12·1 answer
  • Clear selection
    8·1 answer
  • BRAINLIESTTT ASAP! PLEASE HELP ME :)
    12·1 answer
  • PLEASSSEEEE HELLLPPP!!!!!!!!!!!!!!!!!!!! I'M DESPRITE!!!!!!!!!
    8·2 answers
  • finn divided a 5-pound bag of flour into 3 equally-sized containers. what fraction of pound of flour did he put into each contai
    11·1 answer
  • Plz help.<br> N+ 4/3=1/3 what's a fact family just the N don't give a fraction
    9·2 answers
  • Make x the subject a=7x/k-r
    6·1 answer
  • !!!WARNING!!!
    8·2 answers
  • Pls help, this is due tomorrow
    12·2 answers
  • In one round of a game, you are asked how many bones are in a human body. If the percent error of your answer is at most 5%, you
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!