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3 years ago

A researcher surveyed 8 people to see if there is a

Mathematics

2 answers:

Elodia [21]3 years ago

8 0

Answer: D.) y=1.25x + 7.5

Step-by-step explanation:

edg 2021

Mekhanik [1.2K]3 years ago

8 0

Answer: D on edg 2021. have a good day :)

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Kenneth, a competitor in cup stacking, claims that his average stacking time is 8.2 seconds. During a practice session, Kenneth

never [62]

Answer:

The data does not provide sufficient evidence to conclude that Kenneth's mean stacking time is less than 8.2 seconds.

Do not reject the null hypothesis because the p-value 0.0401 is greater than the significance level.

Step-by-step explanation:

Null hypothesis (H0): mu = 8.2 seconds

Alternate hypothesis (Ha): mu < 8.2 seconds

Significance level = 0.04

p-value = 0.0401

Using the p-value approach for testing hypothesis, do not reject H0 because the p-value 0.0401 is greater than the significance level 0.04.

There is not sufficient evidence to conclude that Kenneth's mean stacking time is less than 8.2 seconds.

7 0

3 years ago

Bill is trying to plan a meal to meet specific nutritional goals. He wants to prepare a meal containing rice, tofu, and peanuts

Novay_Z [31]

Answer:

11.33 cups

Step-by-step explanation:

240 grams of carbohydrates: x

40 x + 4 x + 26 x = 240

X = 240/70

X = 3 3/7 cups

332 grams of fats = y

0y + 13y + 70y = 332

Y = 332/83

Y = 4 cups

207 grams of proteins = z

5z + 21z + 27z = 207

Z = 207/53

Z = 3 48/53 cups

3 3/7 + 4 + 3 48/53 = 11.33 cups

3 0

3 years ago

Jane wants to estimate the proportion of students on her campus who eat cauliflower. after surveying 39 students, she finds 4 w

stellarik [79]

Let $x$ be the number of students who eat cauliflower.

Therefore, $x=4$ .

Let $n$ be the total number of students surveyed.

Therefore, $n=39$

Thus, $\hat p$ $=\frac{4}{39} =0.10256$

Now, for 90% confidence level, from the table we know that $Z=1.645$ .

The formula for the interval range of proportion of students is :

$p= \hat p\pm Z\sqrt{\frac{\hat p(1-\hat p)}{n}}$

Plugging in the values we get:

$p=0.10256\pm 1.645\sqrt{\frac{0.10256(1-0.10256)}{39}}=0.10256\pm 0.04858=0.15114, 0.05398$

Thus, Jane is 90% confident that the population proportion p, for students who eat cauliflower in her campus is between 5.398% and 15.114% (after converting the answer we got to percentage).

7 0

4 years ago

What's the equation of this sequence 4,8,16,32,64,128,256

lions [1.4K]

Answer:

See below

Step-by-step explanation:

Here we have a function $a$ such that $a: \mathbb{N}\to \mathbb{R}$ and $a:n \mapsto a(n) = a_n$

The sequence is denoted as $\{a_n\}_{n\in\mathbb{N}}$ such that $\mathbb{N} = \{1, 2, 3, ...\}$

For this sequence, we would have

$\left\{ {2^n\right\}_{n = 2}^8$

But sure it seems to follow

$\left\{ {2^n\right\}_{n = 2}^\infty$

3 0

3 years ago

Read 2 more answers

At sues pizza they sell a large pizza for $8.25 and charge $1.50 for each topping. write an equation that relates the price of t

Kruka [31]

The answer is $6.75 for topping and for the pizza is $2.25

5 0

3 years ago