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Roman55 [17]
3 years ago
5

A consumer testing service tested whether the average baking time of whole wheat bread in gas ovens was less than the average ba

king time of whole wheat bread in electric ovens. Ten loaves of whole wheat bread were prepared and five were randomly assigned to be baked in the five randomly selected gas ovens and five were randomly assigned to be baked in the five randomly selected electric ovens.2. What is the explanatory variable, and is it quantitative or categorical?type of oven (gas versus electric) which is categoricalbaking time which is quantitativebaking time which is categoricaltype of oven (gas versus electric) which is quantitativetype of bread which is categoricaltype of bread which is quantitative3. A consumer testing service tested whether the average baking time of whole wheat bread in gas ovens was less than the average baking time of whole wheat bread in electric ovens. Ten loaves of whole wheat bread were prepared and five were randomly assigned to be baked in the five randomly selected gas ovens and five were randomly assigned to be baked in the five randomly selected electric ovens.What is the response variable in this scenario, and is it quantitative or categorical?baking time which is quantitativetype of bread which is categoricaltype of oven (gas versus electric) which is quantitativebaking time which is categoricaltype of oven (gas versus electric) which is categoricaltype of bread which is quantitative4. Which procedure should be used for this test?chi-square testanalysis of variancetwo-sample z-test for proportionsone-sample z-test for proportionregression analysistwo-sample t-test for meansmatched pairs t-test for mean differenceone-sample t-test for mean (but not matched pairs)
Mathematics
1 answer:
vichka [17]3 years ago
5 0

Answer:

Part 1) The explanatory variable is the type of oven

It is a categorical variable

Part 2) The response variable is the baking time

It is a quantitative variable

part 3) two-sample z-test for proportions should be used for the test

Step-by-step explanation:

An explanatory variable is an independent variable that is not affected by all other variables. In this experiment, the type of oven is the input variable and it  is not affected by any other variable

A categorical variable is one that has two or more categories without any intrinsic ordering of the categories. The type of oven is either gas or electric, so it is categorical.

A response variable is a dependent variable whose variation depends on other variables. The baking time in this experiment depends on the type of oven used

A quantitative variable is one that take on numerical values.

A two proportion z-test allows you to compare two proportions to see if they are the same. The null hypothesis (H0) for the test is that the proportions are the same. The alternate hypothesis (H1) is that the proportions are not the same.

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Find the value of x.
Dafna11 [192]

Answer:

61.7

we have:

cos 56⁰.x = 30/tan 41⁰

=>

x = \frac{30}{ \tan(41 {}^{0} ) \cos(56 {}^{0} )  }  = 61.7

6 0
2 years ago
Find the probability of drawing 3 Aces at random from a deck of 52 ordinary playing cards if the cards are:_________
Minchanka [31]

Answer:

A) 1/2197

B) 1/5525

Step-by-step explanation:

Probability is the likelihood or chance that an event will occur.

Probability = Expected outcome/Total outcome.

Since there are 52 random cards in a deck of card, the total outcome will be 52.

a) Also in a deck of card, there are 4 aces. If we are to select 3 aces with replacement, this means that each time we pick up an ace from the card, it was returned.

Pr(drawing an ace) = 4/52

Pr(drawing 3 aces and replacing it) = 4/52 *4/52*4/52

Pr(drawing 3 aces and replacing it) = 64/140,608

Pr(drawing 3 aces and replacing it) = 1/2197

b) If we pick 3 aces without replacement then each time we pick an ace, the total number cards keeps reducing.

Pr(picking the first ace) = 4/52

Pr(picking the second ace without replacing) = 3/51 (Since we didn't replace the first one, the total ace in the deck of card will reduce to 3 and the total will be 51)

Pr(picking the third ace without replacing) = 2/50 (since we didn't replace the first two aces, the total ace in the deck of card will reduce to 2 and the total will be 50)

Pr(drawing 3 aces without replacement) =  4/52*3/51*2/50

Pr(drawing 3 aces without replacement) =  24/132,600

Pr(drawing 3 aces without replacement) = 1/5525

5 0
3 years ago
Find the values of x and y​
ioda

X= 20 & Y= 70 in right-angled triangle .

What is right angle triangle?

  • A right-angled triangle is a particular kind of triangle in which one of the angles is 90 degrees.
  • The combined angles of the other two are 90 degrees. Perpendicular and the triangle's base make up the sides that the right angle is formed from.
  • The longest of the three sides, known as the hypotenuse, is the third side.

2X + 140 = 180

2X = 40°

   X = 20°

X + Y = 90°

   Y = 70°

Learn more about right-angled triangle

brainly.com/question/3770177

#SPJ13

4 0
1 year ago
6-(-12)= <br><br> 1/2 ÷ 3/4=<br><br> Plz answer quickly!
muminat

6-(-12)=18

1/2 ÷ 3/4=2/3

4 0
3 years ago
Equation<br> horizontal asymptote<br> vertical asymptote
ira [324]

Answer:

Hello,

In order to determine which is the horizontal asymptote remember that the horizontal is always x= something and remember that horizontal is straight from left to right.

So Horizontal asymptote = 2

For vertical asymptote it goes from the bottom of the graph, directly up. Think about it like this, you stand upright...or vertically right? So the vertical asymptote is

y= 0

Rate positively and give brainlist

3 0
3 years ago
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