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Bas_tet [7]
3 years ago
12

Help me I don't know what is 10=n+19​

Mathematics
2 answers:
Orlov [11]3 years ago
6 0

Answer: n=-9

Step-by-step explanation:

tatyana61 [14]3 years ago
4 0

10=n+19​

move +19 to the other side

sign changes from +19 to -19

10-19=n+19-19

10-19=n

-9=n

answer:

n=-9

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A restaurant chain has two locations in a medium-sized town and, believing that it has oversaturated the market for its food, is
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Answer:

Yes, since the test statistic value is greater than the critical value.

Step-by-step explanation:

Data given and notation

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t would represent the statistic (variable of interest)

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We need to conduct a hypothesis in order to check if the true mean of revenue for downtown is higher than for freeway restaurant, the system of hypothesis would be:

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Alternative hypothesis:\mu_{1} > \mu_{2}

Since we don't know the population deviations for each group, for this case is better apply a t test to compare means, and the statistic is given by:

t=\frac{\bar X_{1}-\bar X_{2}}{\sqrt{\frac{s^2_{1}}{n_{1}}+\frac{s^2_{2}}{n_{2}}}} (1)

t-test: Is used to compare group means. Is one of the most common tests and is used to determine whether the means of two groups are equal to each other.

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Since we have all the values we can replace in formula (1) like this:

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Since is a right tailed test the p value would be:

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The best option would be:

Yes, since the test statistic value is greater than the critical value.

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