one day, bill at the candy shoo sold 210 bottles of cherry soda and grape soda for a total of 230.30. If the cherry soda costs 1
1 answer:
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Answer:
Test statistic is [(n - 1) *S^2 ]/ σ ^2 = [(22 - 1) *(3.9)^2 ]/ (3.4) ^2
with 21 degrees of freedom
Yes this data fits at the 10% level of significance, so I would not reject that statistic of 3.9 mmHg as a wrong standard deviation
Step-by-step explanation:
use the expression I attached in the image to find
[(n - 1) *S^2 ]/ σ ^2
where S = the standard deviation calculated from the sample of n trials.
sigma is the population standard deviation.
[(22 - 1) *(3.9)^2 ]/ (3.4) ^2 = 21 * 15.21 / 11.56 = 27.6306
all we have to do now is to make sure this number is in the 90 % confidence
interval. remember this has 21 degrees of freedom, look at the chi-squared chart.
11.5913 < 27.6306 < 32.67905
where 11.5913 is the lower bound of the chart
and 32.67905 is the upper bound
Answer:
The bass fish was the better catch
Step-by-step explanation:
From the question we are told that
The population mean for trout is
The standard deviation is
The population mean for base is
The standard deviation is
The number of trout caught
The number of bass caught
Generally z-value(standardized value ) for the of number trout caught is mathematically represented as
substituting value
Generally z-value(standardized value ) for the of number bass caught is mathematically represented as
substituting value
From our calculation we see that
The fish that was the better catch is the bass fish