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3 years ago

Ben made 1/4 bath of brownies in five minutes. How many minutes did it take to make 1 batch of brownies?

Mathematics

2 answers:

Rom4ik [11]3 years ago

8 0

Answer:

It took 20 minutes to make 1 batch

Step-by-step explanation:

If 1/4 batch of brownies takes 5 minutes then you just multiply 5 times 4 and that equals 20.

Pepsi [2]3 years ago

4 0

Answer:

I would take 20 minutes for ben to make one full batch of browinies

Step-by-step explanation:

1/4= 5 mins

1/4x4= 1 =20

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Weinstein, McDermott, and Roediger report that students who were givne questions to be answered while studying new material had

emmainna [20.7K]

<h2>Answer with explanation:</h2>

Let $\mu$ be the population mean.

By considering the given information , we have

Null hypothesis : $H_0: \mu=73.4$

Alternative hypothesis : $H_a: \mu>73.4$

Since alternative hypothesis is right-tailed , so the test is a right-tailed test.

Given : Sample size : n=16 , which is a small sample , so we use t-test.

Sample mean: $\overline{x}=78.3$ ;

Standard deviation: $s=8.4$

Test statistic for population mean:

$t=\dfrac{\overline{x}-\mu}{\dfrac{s}{\sqrt{n}}}$

i.e. $t=\dfrac{78.3-73.4}{\dfrac{8.4}{\sqrt{16}}}\approx2.333$

Using the standard normal distribution table of t , we have

Critical value for $\alpha=0.01$ : $t_{(n-1,\alpha)}=t_{(15,0.01)}=2.602$

Since , the absolute value of t (2.333) is smaller than the critical value of t (2.602) , it means we do not have sufficient evidence to reject the null hypothesis.

Hence, we conclude that we do not have enough evidence to support the claim that answering questions while studying produce significantly higher exam scores.

3 0

3 years ago

11 less than 7 times a number<br> is 5 more than 6 times the<br> number. Find the number

vivado [14]

Answer:

5 i think. im not good at math. sorry if wrong

4 0

4 years ago

Read 2 more answers

Solve the equation.<br><br> x2 = 160

Airida [17]

Divide both side by 2 ad you get x=80