An online store randomly samples three groups of 100 customers on which delivery method they use. The data shows the results of
2 answers:
Answer:
854 customers.
Step-by-step explanation:
An online store randomly samples three groups of 100 customers on which delivery method they use. The data shows the results of the three samples.
Overnight 2-day Standard Total
Group (1) 27 20 53 100
Group (2) 32 17 51 100
Group (3) 34 19 47 100
Total customers 93 56 151 300
We have to calculate the number of people who will use overnight delivery.
Out of 300 customer there are 93 people who would use overnight delivery, so the percentage = × 100 = 31%
The online store has 2755 customers one day.
Therefore, 31% of the 2755 customers = × 100 = 854.05 ≈ 854 customers.
854 customers would use overnight delivery.
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Answer:
[see answer below]
Step-by-step explanation:
We would move the decimal 5 places to the left.
Hope this helps!
Answer:
There is not enough evidence to suggest that the snow falls in Daphne's hometown does not follow the given distribution.
Step-by-step explanation:
The missing data for the random sample of 80 days between December and April with snowfall is:
Month Days
December 16
January 11
February 16
March 18
April 19
The Chi-square goodness of fit test would be used to determine whether the snow falls in Daphne's hometown followed the given distribution.
The hypothesis for the test can be defined as follows:
<em>H</em>₀: The snow falls in Daphne's hometown does not follow the given distribution.
<em>Hₐ</em>: The snow falls in Daphne's hometown followed the given distribution.
Assume that the significance level of the test is, <em>α</em> = 0.05.
The Chi-square test statistic is given by:
The value of Chi-square test statistic is computed in the Excel sheet below.
Compute the <em>p</em>-value as follows:
The <em>p</em>-value of the test is 0.0785.
Decision rule:
If the p-value of the test is less than the significance level then the null hypothesis will be rejected.
<em>p</em>-value = 0.0785 > <em>α</em> = 0.05.
The null hypothesis will not be rejected.
Conclusion:
There is not enough evidence to suggest that the snow falls in Daphne's hometown does not follow the given distribution.
