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max2010maxim [7]
3 years ago
15

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. How would you interpret the p-value
Mathematics
1 answer:
BartSMP [9]3 years ago
7 0

Answer:

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.

The null hypothesis would have been slope =0 with alternate slope not equal to 0

This is a two tailed test.  Let alpha = 5%

p value = 0.04(given)

p <0.05 our alpha

Hence we reject null hypothesis.

The p value 0.04 states that it is less than 0.05 which indicates that there should be a linear relationship between temperature and ice cream sales.

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Lisa [10]

Answer: It's the last one. If you ever need help with a question like that, just use the desmos graphing calculator. You just put the equation in and it shows you the graph would look for that equation.

6 0
3 years ago
Joe earns $9 per hour. He worked x hours on both Wednesday and Friday, and 8 hours on both Tuesday and Saturday. Write an expres
Tamiku [17]

To find the total amount earned, you need to multiply the number of hours worked by the pay rate. Joe worked x hours for 2 days. That’s 2x hours. He worked 8 hours for 2 days. That’s 8(2), or 16 hours. The total number of hours he worked is 2x + 16. He gets paid $9/hour, so an expression for the total amount earned is 9(2x + 16), or 18x + 144.

8 0
4 years ago
Read 2 more answers
A horse that weighs 1 1/4 tons is carrying a 110 pound person, a 15 ounce water bottle, and a 16 1/2 pound basket what is the we
poizon [28]

Answer:

2635.875pounds

Step-by-step explanation:

Converting all the units to pounds for unit consistency. Let's convert

1 1/4tons horse weight and 15ounce water bottle to pounds.

According to the conversion;

1 ton = 2000pounds

1 1/4 tons = (2000×5/4)pounds = 2500pounds

Similarly for the conversion of ounce to pounds;

1 ounce = 0.625pound

15 ounces of water bottle = (0.625×15)pounds

= 9.375pounds

The total weight of the horse, rider, and items in total will give;

2500pounds horse + 110pounds person + 9.375pounds water bottle + 16.5pounds basket

= 2635.875pounds

8 0
3 years ago
A password is to be made from a string of five characters chosen from the lowercase letters of the alphabet and the numbers 0 th
alex41 [277]

Using the Fundamental Counting Theorem, it is found that for each case, the total number of outcomes is:

a) 60,466,176.

b) 5,961,600.

<h3>What is the Fundamental Counting Theorem?</h3>

It is a theorem that states that if there are n things, each with n_1, n_2, \cdots, n_n ways to be done, each thing independent of the other, the number of ways they can be done is:

N = n_1 \times n_2 \times \cdots \times n_n

Item a:

No restrictions, hence for each of the five characters, there are 36 outcomes, hence n_1 = \cdots = n_5 = 36.

Then, the possible number of passwords is:

N = 36^5 = 60466176

Item b:

The letters and the digits have to be alternated, hence:

  • Starting with a letter, n_1 = n_3 = n_5 = 36, n_2 = n_4 = 10.
  • Starting with a digit, n_1 = n_3 = n_5 = 10, n_2 = n_4 = 36.

Then, the possible number of passwords is:

N = 36^3 \times 10^2 + 10^3 \times 36^2 = 5961600

To learn more about the Fundamental Counting Theorem, you can take a look at brainly.com/question/24314866

5 0
3 years ago
A selective university advertises that 96% of its bachelor’s degree graduates have, on graduation day, a professional job offer
OLEGan [10]

Answer:

The probability is  P( p <  0.9207) = 0.0012556

Step-by-step explanation:

From the question we are told

  The population proportion is p = 0.96

 The sample size is  n  =  227

 The number of graduate who had job is  k = 209

Generally given that the sample size is large enough  (i.e n >  30) then the mean of this sampling distribution is  

       \mu_x = p = 0.96

Generally the standard deviation of this sampling distribution is  

    \sigma  = \sqrt{\frac{p (1 - p )}{n} }

=>  \sigma  = \sqrt{\frac{0.96 (1 - 0.96 )}{227} }

=>  \sigma  = 0.0130

Generally the sample proportion is mathematically represented as

      \^ p =  \frac{k}{n}

=> \^ p =  \frac{209}{227}

=> \^ p =  0.9207

Generally probability of obtaining a sample proportion as low as or lower than this, if the university’s claim is true, is mathematically represented as

     P( p <  0.9207) = P( \frac{\^ p - p }{\sigma } <  \frac{0.9207 - 0.96}{0.0130 }  )

\frac{\^ p - p}{\sigma }  =  Z (The  \ standardized \  value\  of  \ \^ p )

   P( p <  0.9207) = P(Z< -3.022 )

From the z table  the area under the normal curve to the left corresponding to    -3.022  is

     P(Z< -3.022 ) = 0.0012556

=> P( p <  0.9207) = 0.0012556

6 0
3 years ago
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