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Neko [114]
3 years ago
12

The stem-and-leaf plot below shows the number of pages each student in the class read the previous evening.

Mathematics
1 answer:
Oliga [24]3 years ago
6 0

Answer: 35 days, on engenuity

Step-by-step explanation:

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Modeling real life last week you finish level to of a video game and 32 minutes today you finish level 2 in 28 minutes what is t
rusak2 [61]

Answer:

  -12.5%

Step-by-step explanation:

The percentage change in your time can be computed using ...

  pct change = ((new value)/(old value) -1) × 100%

  = (28/32 -1) × 100%

  = (0.875 -1) × 100% = -12.5%

The time to finish level 2 decreased by 12.5%.

6 0
3 years ago
An engineer is comparing voltages for two types of batteries (K and Q) using a sample of 75 type K batteries and a sample of 46
lorasvet [3.4K]

The decision rule for rejecting the null hypothesis, considering the t-distribution, is of:

  • |t| < 1.9801 -> do not reject the null hypothesis.
  • |t| > 1.9801 -> reject the null hypothesis.

<h3>What are the hypothesis tested?</h3>

At the null hypothesis, it is tested if there is not enough evidence to conclude that the mean voltage for these two types of batteries is different, that is, the subtraction of the sample means is of zero, hence:

H_0: \mu_1 - \mu_2 = 0

At the alternative hypothesis, it is tested if there is enough evidence to conclude that the mean voltage for these two types of batteries is different, that is, the subtraction of the sample means different of zero, hence:

H_1: \mu_1 - \mu_2 \neq 0

We have a two-tailed test, as we are testing if the mean is different of a value.

Considering the significance level of 0.05, with 75 + 46 - 2 = 119 df, the critical value for the test is given as follows:

|t| = 1.9801.

Hence the decision rule is:

  • |t| < 1.9801 -> do not reject the null hypothesis.
  • |t| > 1.9801 -> reject the null hypothesis.

More can be learned about the t-distribution in the test of an hypothesis at brainly.com/question/13873630

#SPJ1

3 0
1 year ago
You want your markup to be 35% of the final selling price. Your cost is $200. For what price should you sell the product
Sidana [21]
B
Multiply 35% by 200 and get 70
Add that 70 to 200 and you’ll get B which is 270
5 0
2 years ago
A conference planner has put together 280 binders for attendees and another 31 binders for presenters.how many total binders did
Ede4ka [16]

Answer:

311

Step-by-step explanation:

280 + 31 = 311

3 0
3 years ago
What is the measure of x, given that figure ABCD is a rhombus.
dsp73
The answer would be d 
5 0
3 years ago
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