2. In a class 70 students, 44 like Bookkeeping, 36 like- Commerce, and 17 like both bookkeeping and commere How many student lik
2 answers:
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Answer:
Step-by-step explanation:
Given : Sample size : , which is a small sample (, 30) so we use t-test.
Sample mean :
Standard deviation :
Significance level :
Critical value :
The confidence interval for population mean is given by :-
Hence, a 95% confidence interval for the population mean =
Answer:
Number of cookies sold is 2000 and number of cupcakes sold is 1500
Step-by-step explanation:
Let number of cookies be
and number of cupcakes be so
Cost of one cookie is $0.75
Cost of one cupcake is $2
Number of cookies sold is 2000 and number of cupcakes sold is 1500.