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Andreas93 [3]
3 years ago
14

For the​ following, indicate whether a confidence interval for a proportion or mean should be constructed to estimate the variab

le of interest. Justify your response.Does chewing your food for a longer period of time reduce​ one's caloric intake of food at​ dinner? A researcher requires a sample of 75 healthy males to chew their food twice as long as they normally do. The researcher then records the calorie consumption at dinner.The confidence interval for a_________
should be constructed because the variable of interest isa. an individual's opinion,b. the number of individuals surveyed,c. an individual's chewing time,d. an individual's reduction in caloric intake,

which is a______________a. qualitativeb. quantitativec. variable.
Mathematics
1 answer:
Mrrafil [7]3 years ago
3 0

Answer:

Step-by-step explanation:

The research question is given as "Does chewing your food for a longer period of time reduce​ one's caloric intake of food at​dinner?"

Here interest of study variable is "reduction of caloric intake of food at dinner".

For construction of confidence interval, the researcher records the calorie consumption at dinner.

Since calorie consumption is a variable, we need to construct confidence interval for mean.

So correct choice of sentences as "The confidence interval for a mean should be constructed because the variable of interest is an individual's reduction in caloric intake, which is a quantitative variable."

You might be interested in
Find parametric equations for the path of a particle that moves along the circle x2 + (y − 3)2 = 16 in the manner described. (en
sveticcg [70]

Answer:

x(t) = 4 cos(-t)\\y(t) = 4 sin(-t) + 3\\

and t ∈ [0,2π]

Step-by-step explanation:

The standard equation for circle is:

(x-h) ^2 + (y-k)^2 = r^2

Comparing our equation with standard

x^2 + (y-3)^2 =16

h= 0,

k= 3

r= 4 (as in standard r², so r =√ r²)

Required:

Parametric equations of the circle

Formula:

x = r cos(t) + h\\y= r cos(t) +k

Putting values of r and h and k we get

x= 4 cos(t) + 0 \\x= 4 cost(t) \\y= 4 sin(t) + 3

As we need to start the object at (4,3)

x(0) = 4 and y(0) = 3

and the period is 2π

As the rotation is starting clock wise we will invert the value of t i.e -t

x(t) = 4 cos(-t)\\y(t) = 4 sin(-t) + 3\\

and t ∈ [0,2π]

5 0
3 years ago
Does (3,1) satisfy 4x + 5y + 19
shtirl [24]

Answer:

No

Step-by-step explanation:

4*3 = 12

5*1 = 5

12 + 5 = 17

17 = 19 <-- doesn't make sense

5 0
3 years ago
Which ordered pair makes both inequalities true?
kvasek [131]

Answer:

(3, 0)

Step-by-step explanation:

Given the inequality y > -2x + 3 and y ≤ x - 2

The graph of the inequalities are plotted using the geogebra graphing online calculator.

The portion of the graph that is shaded with dark blue, represents the portion that supports the equation.

All the ordered pair points given in the question are also labelled in the graph.

From the graph we can see that only point (3, 0) falls in the area that supports the equation. Hence (3, 0) makes both inequalities true.

6 0
3 years ago
Use the calculator to find the product. (9.1 × 109)(7.5 × 102) what is the exponent of the power in scientific notation?
antiseptic1488 [7]

The exponent of the power in the scientific notation of the result of the expression (9.1 × 10^9)(7.5 × 10^2) is 12

<h3>How does scientific notations work?</h3>

The number is written in the form a \times 10^b where we have 1 \leq a < 10

The number b shows the order, which is the most important figure for which scientific notation is used. It tells us how much order large or small a value is in powers of 10. We can for a time, ignore the value of 'a' for two comparable quantities and only compare their orders(this type of comparison is useful when difference is too big, like size of human to size of a star etc sort of comparisons).

Scientific notations have some of the profits as:

  • Better readability due to compact representation
  • Its value in terms of power of 10 is known, which helps in easy comparison of quantities differing by a large value.

Expressing the multiplication of (9.1 × 10^9)(7.5 × 10^2) in terms of scientific notation, we get:

(9.1 0\times 10^9)(7.5 \times 10^2) = 9100000000 \times 750 = 6825000000000\\(9.1 0\times 10^9)(7.5 \times 10^2) = 6.825 \times 10^{12}(the exponent is 12)

Thus, the exponent of the power in the scientific notation of the result of the expression (9.1 × 10^9)(7.5 × 10^2) is 12

Learn more about scientific notation here:

brainly.com/question/3112062

8 0
2 years ago
Read 2 more answers
Can someone please help me
vitfil [10]

Answer:

x squared, i dont know how to do the lil 2 on a computer lolz

3 0
3 years ago
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