Answer:
81 samples
Step-by-step explanation:
According to the empirical rule :
Possible values of the sample mean is within 3 standard deviations of the population mean :
μ ± 3 sd(x) ; sd(x) = standard deviation of sampling distribution.
3 * sd(x) = 1
sd(x) = 1/3
Recall:
Standard deviation of sampling distribution, sd(x)
sd(x) = σ / sqrt(n)
1/3 = 3 / sqrt(n)
Square both sides
1/9 = 9/n
Cross multiply :
n * 1 = 9 * 9
n = 81
Answer:
A. True
Step-by-step explanation:
The general formula for predicting an outcome in a binomial probability distribution function is: nCx(p)^x(q)^(n-x)
where p is the probability of success and q is the probability of failure
From the above formula; nCx represent the number of ways of obtaining x successes in n trials.
nCx is a combination computation and combination helps to determine in how many ways a certain outcome is possible.
Omg no do not click the link it’s takes all you’re information people have been doing this on app
The reason why Fiona cannot make a valid prediction based on the mean of the population is that the variation of Fiona’s samples is too large.
<h3>Why can't Fiona use the means she recorded?</h3><h3 />
Mean is quite sensitive to outliers so it is best used when the variation between variables is not too much.
In Fiona's case, there variation is quite high with high variable of 95 compared to a low value of 45.
Find out more on effect of outliers at brainly.com/question/16815987.
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Answer:
heads 4 H-4
tails 2 T-2 and 6 is T-6
Step-by-step explanation:
