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
aleksandrvk [35]
3 years ago
11

Jim Tree sells trees. The mean length of the trees purchased was 68 inches with a standard deviation of 10 inches. Jim wants to

know what percent of his sales were more than 84 inches tall. He can use the standard normal distribution to help him.
1. He asks, "what is the mean?" Mean = ------ inches.
He thinks, "What is the expected distribution about the mean?" ( 38 inches 48 inches 58 inches 68 inches 78 inches 88 inches 98 inches. )

2. He thinks, " ------% of the sales will be below 68 inches." But, he needs to know the percentage between 68 and 84 to add to that.So, he calculates a z-score = = , and finds the percentage associated with 1.6 in the table.

3. This is (to the nearest tenth)------- %. Now Jim knows that ------- % of his sales were 84 inches or less.

4. Therefore, the remaining -------- % were more than 84 inches.
Mathematics
1 answer:
Zepler [3.9K]3 years ago
4 0

Step-by-step explanation:

We know that,

Z=\dfrac{X-\mu}{\sigma}

Where,

X = raw score = 84

μ = mean = 68

σ = standard deviation = 10

Putting the values,

Z=\dfrac{84-68}{10}=1.6

The percent of his sales that were less than or equal to 84 inches, is

P(Z\leq 1.6)=0.9452=94.52\%\approx 94.5\%

Therefore, the remaining 100-94.5=5.5% were more than 84 inches.

You might be interested in
a square with an area of 25 in.^2 is plotted on a grid so that the bottom-left corner is at the origin. The side of the square a
bazaltina [42]

Answer:

Reflection about the vertical line x = 2.5 inches will map the square unto itself

Step-by-step explanation:

The given parameters are;

The area of the square = 25 in²

The orientation of the sides of the square are horizontal and vertical

Therefore, we have;

The area, A, of the square given by the following relation;

A = Side²

A = 25 in²

Therefore;

The area of the square = 25 = side²

The length of the sides of the square = √A = √25 = 5

The length of the sides of the square = 5 inches

The reflection of a figure that maps the figure unto itself is a reflection along the line of symmetry

One of the line of symmetry that divides the square into two similar halves is the vertical straight that passes half way through the horizontal side, which is the point 2.5 inches to the right on the x-axis with the coordinates (2.5, 0)

Therefore, reflection about the line x = 2.5 inches will map the square unto itself.

3 0
2 years ago
Figure ABCD is a parallelogram.
Sonbull [250]
Answer is

A. First prove ABC is congruent to CDA, and then state AD and BC are corresponding sides of the triangles.

hope it helps
7 0
3 years ago
Read 2 more answers
If the product ab is 0, then either a or b must be
Talja [164]

Answer:

zero

Step-by-step explanation:

7 0
3 years ago
Introduction to addition or subtraction of fractions with different denominator 3/4-1/8
snow_lady [41]
The denominator must be the same, so just think of the LEAST COMMON MULTIPLE, The LCM here is 8, because you can multiply 4 by 2 to get 8.
so when you multiply, you multiply both on the top and on the bottom, so this would be:
3 x 2 / 4 x 2 = 6 / 8
Now you can add or subtract: 6/8 - 1/8 = 5/8
7 0
3 years ago
Which phrase describes the perpendicular distance between two bases of a cylinder
Nonamiya [84]
4) The height of the cylinder

5 0
3 years ago
Read 2 more answers
Other questions:
  • PLS PLS. send me the answer for the first question with an explanation. due tmrw so quick.​
    11·1 answer
  • If you roll two fair six-sided dice, what is the probability that the sum is 5 or lower?
    12·2 answers
  • The length and width of a rectangle are consecutive odd integers. The perimeter is 120 meters. Find the length and width
    5·1 answer
  • A painter needs to cover a triangular region 60 meters by 68 meters by 72 meters. a can of can cover 70 square meters.. how many
    9·1 answer
  • Help me please this is due today help me
    5·1 answer
  • I am confused with this word problem.
    12·1 answer
  • Use trigonometric identities to simplify each expression.<br><br> 1/cot^2 (x) - 1/cos^2(x)
    12·1 answer
  • Emily worked for 9 hours and earned $60.75. How much did she earn per hour?
    10·2 answers
  • The scatter plot shows the association between the population of various states in the United States and the number of cellular
    14·1 answer
  • Use the compound interest formulas A=P e^rt to solve the problem given. round answers to the nearest cent.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!