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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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2 years ago
What is the value of 13.997x4 to 2 decimal places ?
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Step-by-step explanation:

SOLUTION

We want to solve:

13.997×4 to 2 decimal places

Now:

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2 years ago
Read 2 more answers
If an object is projected upward from ground level with an initial velocity of 128 ft per sec, then it's height in feet after t
antoniya [11.8K]

Answer: t= 4 seconds

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Step-by-step explanation:

The height of the object projected upwards after t seconds is given by

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The expression is a quadratic equation. When this equation is plotted on a graph, height against time, it takes the shape of a parabola whose vertex represents the maximum height attained by the object.

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S = -16× 4^2 + 128×4

S = -256+512

S = 256 feet

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3 years ago
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