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g100num [7]
3 years ago
10

How hot does it get in Death Valley? The following data are taken from a study conducted by the National Park System, of which D

eath Valley is a unit. The ground temperatures (°F) were taken from May to November in the vicinity of Furnace Creek. Compute the mean, median, and mode for these ground temperatures. (Enter your answers to one decimal place.)144, 146, 149, 149, 162, 165, 165, 172, 180, 180, 180, 181, 183, 183
(a) Mean value = ----------------. (Enter your answer to two (2) decimal places.)
(b) Median = ------------------ . (Enter your answer to one decimal place.)
(c) Mode = --------------------
Mathematics
1 answer:
Sonbull [250]3 years ago
8 0

Answer:a) mean=167.1

b)median=168.5

c)mode= 180

Step-by-step explanation:

Mean= total sum of values in the data set/ number of values

=2339/14=167.1

Median = midpoint = 165+172/2= 337/2= 168.5

Mode= number with the highest number of frequency, for this data set, 180 occurred most because it occurred three times

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in triangle ABC shown below, L is the midpoint of BC, M is the midpoint of AB, and N is the midpoint of AC. Find the perimeter o
alexdok [17]

35

since m and n are the midpoints of ab and ac resistively

then ,bc=2mn=16

since m and l are the midpoints of ba and bc respectively

then, ac =2mn =10

then,nc =1/2 × 10 =5

similary, mb=6

then ,perimeter=nc+mb+mn+bc=5+6+8+16=35

6 0
3 years ago
Running from the top of a flagpole to a hook in the ground there is a rope that is 10 meters
zimovet [89]

Answer:

16 meters basic math

Step-by-step explanation:

5 0
3 years ago
Help me on number 2 please . The number on the rectangle says<br> 18x^2 +12x+2
swat32
2* (9x2squared -6 * -1 ) 
5 0
3 years ago
When a scientist conducted a genetics experiments with peas, one sample of offspring consisted of 943 peas, with 717 of them hav
pshichka [43]

Using the normal approximation to the binomial distribution, it is found that:

a) 0.242 = 24.2% probability of getting 717 or more peas with red flowers.

b) Since Z < 2, 717 peas with red flowers is not significantly high.

c) Since 717 peas with red flowers is not a significantly high result, we cannot conclude that the scientist's assumption is wrong.

For each pea, there are only two possible outcomes. Either they have a red flower, or they do not. The probability of a pea having a red flower is independent of any other pea, which means that the binomial distribution is used to solve this question.

Binomial distribution:

Probability of x successes on n trials, with p probability.

Normal distribution:

In a normal distribution with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

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

  • It measures how many standard deviations the measure is from the mean.  
  • After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X.
  • If Z > 2, the result is considered <u>significantly high</u>.

If np \geq 10 and n(1-p) \geq 10, the binomial distribution can be approximated to the normal with:

\mu = np

\sigma = \sqrt{np(1-p)}

In this problem:

  • 943 peas, thus, n = 943
  • 3/4 probability of being red, thus p = \frac{3}{4} = 0.75.

Applying the approximation:

\mu = np = 943(0.75) = 707.25

\sigma = \sqrt{np(1-p)} = \sqrt{943(0.75)(0.25)} = 13.297

Item a:

Using continuity correction, this probability is P(X \geq 717 - 0.5) = P(X \geq 716.5), which is <u>1 subtracted by the p-value of Z when X = 716.5</u>.

Then:

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

Z = \frac{716.5 - 707.25}{13.297}

Z = 0.7

Z = 0.7 has a p-value of 0.758.

1 - 0.758 = 0.242

0.242 = 24.2% probability of getting 717 or more peas with red flowers.

Item b:

Since Z < 2, 717 peas with red flowers is not significantly high.

Item c:

Since 717 peas with red flowers is not a significantly high result, we cannot conclude that the scientist's assumption is wrong.

A similar problem is given at brainly.com/question/25212369

6 0
3 years ago
What is the point of intersection when the system of equations below is graphed on the coordinate plane?
WARRIOR [948]

Neither of the options are correct for the given equations.

Step-by-step explanation:

-x+y=4...................................................1

16x+y=-3...............................................2

Subtract equation 1 and 2

                              -x+y- 16x -y = 4+3

                               ⇒ -17x = 7

                               ⇒x= \frac{7}{-17\\}

                              ⇒x= -0.4117

so,

                        16×-0.4417 + y = -3

                       ⇒y= -3+6.5872

                      ⇒y= 3.5872

So the point of intersection is (-0.4117, 3.5872)

8 0
3 years ago
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