EXPERT HELP I'LL GIVE BRAINLIEST: EXPLAIN THE ANSWER
2 answers:
You might be interested in
Answer:
a. Left Skewed
b. More students scored above 70
c. No
d. 0.0008
e. standard deviation increases by 1.4142
Step-by-step explanation:
a. The distribution is Left skewed. The maximum possible score is 100 and the mean is 70, hence, there is a barrier preventing a long right tail.
-The scores to the left is only 20, the left therefore is longer.
-The median, 74, is higher than the mean, 70, thus the mean is more left leaning.
b.More students will score more than 70.
-the median is 74 suggesting that 50% plus have scored 74points +
- Given the mean is 70 points, it's therefore obvious that more than 50% of the students have score more than 70 points.
c. No. This is not a normal distribution therefore we cannot calculate the probability that a randomly chosen student scored above 75 using this distribution.
d. The sample size n is large, n>30, so we can use the central limit theorem to approximate the probability:
e. The standard deviation will increase by the square root of the decreament :
#Standard deviation increases by 1.4142
Answer:
"24 pounds" is the appropriate answer.
Step-by-step explanation:
According to the question, the equation will be:
⇒ ...(equation 1)
or,
⇒
...(equation 2)
Now,
By multiplying (equation 1) by 55 and (equation 2) by 1, we get
⇒ ...(equation 3)
⇒ ...(equation 4)
From equation 3 and 4, we get
⇒
By putting the values of "y" in equation 1, we get
⇒
Thus the value of x be "24 pounds".