Sheldon is creating a graph to represent the trip he takes from his home to his favorite clothing store. In his graph, one unit
1 answer:
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Answer: (0.8115, 0.8645)
Step-by-step explanation:
Let p be the proportion of people who leave one space after a period.
Given: Sample size : n= 525
Number of people responded that they leave one space. =440
i.e. sample proportion:
z-score for 90% confidence level : 1.645
Formula to find the confidence interval :
Hence, a 90% confidence interval for the proportion of people who leave one space after a period: (0.8115, 0.8645)
Answer:
b.75
Step-by-step explanation:
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean and standard deviation
, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean
and standard deviation
.
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
In this problem:
Mean of the population is 75.
By the Central Limit Theorem,
The mean of the sample, , is expected to be also 75.
So the correct answer is:
b.75
First, she distributed 
Which gave her
Then, she combined like terms
Which gave her
Then, she subtracted
from both sided
Which gave her
Then, she added
to both sides
Which gave her
And finally sh edivided 32 by 2 and got
hope this helps if you have any questions please pm me :)
Which gave her
Then, she combined like terms
Which gave her
Then, she subtracted
Which gave her
Then, she added
Which gave her
And finally sh edivided 32 by 2 and got
hope this helps if you have any questions please pm me :)