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BigorU [14]
3 years ago
14

The owner of an ice cream shop wants to determine whether there is a relationship between ice cream sales and temperature. The o

wner collects data on temperature and sales for a random sample of 30 days and runs a regression to determine if there is a relationship between temperature (in degrees) and ice cream sales. The p-value for the two-sided hypothesis test is 0.04.
A. How would you interpret the p-value?
1)If there is no relationship between temperature and sales, the chance of selecting a sample this extreme would be 4%.2)If there is a relationship between temperature and sales, the chance of seeing a regression coefficient this large would be 4%.3)There is a 4% chance that there is a relationship between temperature and revenue.4)There is a 4% chance that there is no relationship between temperature and revenue.
Mathematics
1 answer:
Alina [70]3 years ago
3 0

Answer:

4)There is a 4% chance that there is no relationship between temperature and revenue.

Step-by-step explanation:

Given that the owner of an ice cream shop wants to determine whether there is a relationship between ice cream sales and temperature. The owner collects data on temperature and sales for a random sample of 30 days and runs a regression to determine if there is a relationship between temperature (in degrees) and ice cream sales

A) The p value is the probability of rejecting null hypothesis when it is true.

In this case null hypothesis would have been there is no relationship between temperature and Sales.

The probability of concluding that there is relationship between temperature and sales when there is actually no real realtionship is only 0.04.

4)There is a 4% chance that there is no relationship between temperature and revenue.

is right answer

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How would it look like if you graphed this equation. y = 2x - 2
Anastaziya [24]

Answer:

Step-by-step explanation:

4 0
3 years ago
EXAMPLE 2 Prove that 9ex is equal to the sum of its Maclaurin series. SOLUTION If f(x) = 9ex, then f (n + 1)(x) = for all n. If
amm1812

Answer:

To Prove: 9e^x is equal to the sum of its Maclaurin series.

Step-by-step explanation:

If f(x) = 9e^x, then f ^{(n + 1)(x)} =9e^x for all n. If d is any positive number and   |x| ≤ d, then |f^{(n + 1)(x)}| = 9e^x\leq  9e^d.

So Taylor's Inequality, with a = 0 and M = 9e^d, says that |R_n(x)| \leq \dfrac{9e^d}{(n+1)!} |x|^{n + 1} \:for\: |x| \leq  d.

Notice that the same constant M = 9e^d works for every value of n.

But, since lim_{n\to\infty}\dfrac{x^n}{n!} =0 $ for every real number x$,

We have lim_{n\to\infty} \dfrac{9e^d}{(n+1)!} |x|^{n + 1} =9e^d lim_{n\to\infty} \dfrac{|x|^{n + 1}}{(n+1)!} =0

It follows from the Squeeze Theorem that lim_{n\to\infty} |R_n(x)|=0 and therefore lim_{n\to\infty} R_n(x)=0 for all values of x.

THEOREM\\If f(x)=T_n(x)+R_n(x), $where $T_n $is the nth degree Taylor Polynomial of f at a and  $ lim_{n\to\infty} R_n(x)=0 \:  for \: |x-a|

By this theorem above, 9e^x is equal to the sum of its Maclaurin series, that is,

9e^x=\sum_{n=0}^{\infty}\frac{9x^n}{n!}  for all x.

6 0
3 years ago
Find the absolute maximum and minimum values of the function below. f(x) = x3 − 9x2 + 3, − 3 2 ≤ x ≤ 12 Solution Since f is cont
Neko [114]

Answer:

There are an absolute minimum (x = 6) and an absolute maximum (x = 12).

Step-by-step explanation:

The correct statement is described below:

Find the absolute maximum and minimum values of the function below:

f(x) = x^{3}-9\cdot x^{2}+ 3, 2 \leq x \leq 12

Given that function is a polynomial, then we have the guarantee that function is continuous and differentiable and we can use First and Second Derivative Tests.

First, we obtain the first derivative of the function and equalize it to zero:

f'(x) = 3\cdot x^{2}-18\cdot x

3\cdot x^{2}-18\cdot x = 0

3\cdot x \cdot (x-6) = 0 (Eq. 1)

As we can see, only a solution is a valid critical value. That is: x = 6

Second, we determine the second derivative formula and evaluate it at the only critical point:

f''(x) = 6\cdot x -18 (Eq. 2)

x = 6

f''(6) = 6\cdot (6)-18

f''(6) =18 (Absolute minimum)

Third, we evaluate the function at each extreme of the given interval and the critical point as well:

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f(2) = -25

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f(6) = 6^{3}-9\cdot (6)^{2}+3

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x = 12

f(12) = 12^{3}-9\cdot (12)^{2}+3

f(12) = 435

There are an absolute minimum (x = 6) and an absolute maximum (x = 12).

6 0
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ella [17]

Answer:

2850 employees

Step-by-step explanation:

Given that ,

3 supervisors = 30 employees

1 supervisor = 30/3 employees

285 supervisors = 30 / 3 × 285 employees

285 supervisors = 10 × 285 employees

285 supervisors = 2850 employees( Answer)

7 0
3 years ago
Box is 24 square feet, width is 2/3 of length
RideAnS [48]
Area = length * width
24 = l * 2/3
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l = 36

So, The length would be 36 feet 

Hope this helps!
7 0
3 years ago
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