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ZanzabumX [31]
3 years ago
5

At the district competition for 5th grade jump-roper of the year, the following number of jumps without stopping were recorded p

er student:
203,245,237,233,90,100,100,277,265,264,265,285,288,291,
291,290,300,224,200,257,290,279,266,288
 Find the median and mean
Mathematics
2 answers:
MAVERICK [17]3 years ago
7 0
There actually is a mean, you take the two middle numbers, add them together then divide by two.

mean=242.83
median=265
adoni [48]3 years ago
6 0
The median is 264 and there is no mean.
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Write equation for the line in slope intercept form (6,4) and (3,8)
nikdorinn [45]

Answer: y = - 4x/3 + 12

Step-by-step explanation:

The equation of a straight line can be represented in the slope-intercept form, y = mx + c

Where c = y intercept

m represents the slope of the line.

m = (y2 - y1)/(x2 - x1)

y2 = final value of y

y 1 = initial value of y

x2 = final value of x

x1 = initial value of x

The line passes through (6, 4) and (3, 8),

y2 = 8

y1 = 4

x2 = 3

x1 = 6

Slope,m = (8 - 4)/(3 - 6) = 4/- 3 = - 4/3

To determine the y intercept, we would substitute x = 3, y = 8 and m= - 4/3 into y = mx + c. It becomes

8 = - 4/3 × 3 + c

8 = - 4 + c

c = 8 + 4

c = 12

The equation becomes

y = - 4x/3 + 12

5 0
3 years ago
What is the solution of the system y=-3x 3x+2y=6
irinina [24]
I like to solve these by graphing, so if you graph both of these functions (as shown in the picture below), you look for the intersection between the two graphs, which in this case is (-2,6).


7 0
3 years ago
Read 2 more answers
HEY GUYS I NEED HELP WITH THIS PLZZ! write down everything from the detail of how yall found ur answer plzz! 20 points or more..
aleksley [76]

Answer:

1/6+1/8+$13.50+$5=x

x=$18.79

Step-by-step explanation:

i add them

first i find the common denominator for 1/6 and 1/8

then i add 13.50 by 5

then add 18.50 by 7/24

i hope this explains how i got my answer

5 0
3 years ago
Read 2 more answers
Ngozi earns $24000 in salary in the first year she works as an interpreter. each year, she earns a 3.5% raise.
Novosadov [1.4K]
Given that the current salary for Ngozi is $24000 and she earns 3.5% raise yearly, the function that will represent her salary in t years will be:
A=P(1+r)^t
where:
A=future amount
P=principle
r=rate
t=time 
thus plugging in the values we shall have:
s(t)=24000(1+3.5/100)^t
s(t)=24000(1.035)^t
thus the answer is:
s(t)=24000(1.035)^t
3 0
3 years ago
Suppose 60% of American adults believe Martha Stewart is guilty of obstruction of justice and fraud related to insider trading.
Ierofanga [76]

Answer:

Since the sample size is large enough (n>30) and the probability of success is near to 0.5, and we have that n\hat p = 60>10 and n(1-\hat p) = 40>10 we can assume that the distribution for \hat p is normal

The population proportion have the following distribution  

\hat p \sim N(\hat p,\sqrt{\frac{\hat p(1-\hat p)}{n}})  

The mean is given by:

\mu_p = 0.6

\sigma_p = \sqrt{\frac{0.6*(1-0.6)}{100}}=0.04899

So then we can conclude that the best answer would be:

c. approximately Normal, with mean 0.6 and standard error 0.04899

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

p represent the real population proportion of interest

\hat p represent the estimated proportion for the sample

n is the sample size required (variable of interest)

Solution to the problem

Since the sample size is large enough (n>30) and the probability of success is near to 0.5, and we have that n\hat p = 60>10 and n(1-\hat p) = 40>10 we can assume that the distribution for \hat p is normal

The population proportion have the following distribution  

\hat p \sim N(\hat p,\sqrt{\frac{\hat p(1-\hat p)}{n}})  

The mean is given by:

\mu_p = 0.6

\sigma_p = \sqrt{\frac{0.6*(1-0.6)}{100}}=0.04899

So then we can conclude that the best answer would be:

c. approximately Normal, with mean 0.6 and standard error 0.04899

8 0
3 years ago
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