#1 pipers pepperoni pieces- $0.41
noras nummy nuggets- $0.34
noras nummy nuggets is better
#2 +65?
A) The mean would be 1.842 and the standard deviation would be 1.339.
b) It would not be unusually low.
Explanationa) This can be modeled as a binomial distribution, since there are two outcomes (7 or not 7), the events are independent (getting a 7 on one spin does not influence the chance of a 7 on the next spin) and there are a fixed number of trials (70). In a binomial distribution, the mean is given by n*p, where n is the number of trials and p is the probability.
μ=n*p=70*(1/38) = 1.842.
The standard deviation of a binomial distribution is given by
σ=√(n*p*(1-p))=√(70(1/38)(37/38)=1.339.
b) To determine if this is unusually low, we find the probability:

Since this is not below 0.05, we do not consider this unusual.
Fractions Decimals Percents
1/4 0.25 25%
4/5 0.80 80%
3/4 0.75 75%
33/100 0.33 33%
1/10 0.10 10%
33/50 0.66 66%
1/8 0.125 12.5%
2/4 0.50 50%
Everything is put into order how it’s supposed to be on the chart! :) hope this helps you out a lot. Have a wonderful day❤️
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