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Ira Lisetskai [31]
2 years ago
14

The manager of a restaurant tracks the types of dinners that customers order from the menu correct amount of food is ordered fro

m the supplier each week. Data from customer orders last weekly distribution.
Type of Dinner Beef Chicken Fish Pork Vegetarain
Propotion 0.18 0.41 0.15 0.20 0.06

The manager believes that there might be a change in the distribution from last year to this year. A random sample of200 orders was taken from all customer orders placed last week. The following table shows the results of the sample.

Type of Dinner Beef Chicken Fish Pork Vegetarain
Frequency 32 86 34 30 18

Assume each order is independent. For which type of dinner is the value of its contribution to the appropriate test statistic the greatest?

a. beef
b. chicken
c. fish
d. pork
e. vegetarian
Mathematics
1 answer:
Novosadov [1.4K]2 years ago
6 0

Answer:

The answer is "Option E".

Step-by-step explanation:

In order to find the contribution needed, we must use Chi-Square test statistics here.

Chi-square = \Sigma [\frac{(O -E)^2}{E}]

Here frequencies O are observed or frequencies E are expected.

Please find the calculation in the attached table.

Hence the contribution Chi-square is the highest for the vegetarian.

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If four blue marbles and eight non-blue marbles make a probability of 0.33, how many non-blue marbles do you need to combine wit
den301095 [7]

The number of non-blue marbles you need to combine with the blue marbles to achieve a probability of 0.1 is 28.

<h3>How many non-blue marbles are needed?</h3>

Probability determines the odds that a random event would happen. The probability the event occurs is 1 and the probability that the event does not occur is 0.

The more likely the event is to happen, the closer the probability value would be to 1. The less likely it is for the event not to happen, the closer the probability value would be to zero.

Probability of picking a blue marble = number of blue marble / total number of marbles

4 / (4 + 8)

4/12 = 0.33

The number of non-blue marbles needed = ( 4 / 0.1) - 12

40 - 12 = 28

To learn more about probability, please check: brainly.com/question/13234031

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5 0
2 years ago
The total cost, in dollars, to order x units of a certain product is modeled by C(x)=5x²+320 . According to the model, for what
lora16 [44]

Answer:

The minimum cost per unit is obtained for an order of 8 units.

Step-by-step explanation:

Since the total cost is modeled by;

C(x)=5x²+320

Then;

1 unit costs; C(x)=5(1)²+320 = 325

cost per unit 325/1 = 325

8 units costs; C(x)=5(8)²+320 = 640

cost per unit = 640/8 = 80

80 units costs; C(x)=5(80)²+320 = 32320

Cost per unit = 32320/80 = 404

The minimum cost per unit is obtained for an order of 8 units.

7 0
3 years ago
I need the answer as fast as i can get it!
blondinia [14]

Answer:

The answer should be choice D.

HOPE THIS HELPS! :)

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Answer:

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Step-by-step explanation:

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<h3>Answer: 5^24</h3>

<h2>Maybe it can be your answer but i am not sure that it is fixed answer </h2>
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3 years ago
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