Lv 1218 points

# Stella

• ### AP stats question help??? please?

The data above represents the number of deaths from traffic accidents that

involved drunk drivers for the given year.

1. What is the median number of deaths for the given years?

2. What is the IQR of the death data?

3. What is the mean number of deaths?

4. What is the standard deviation of the death data?

5. What is the z-score for the number of deaths in 1993?

Mathematics1 month ago
• ### Median, Mean, IQR, Standard Deviation, Z-score question?

The data above represents the number of deaths from traffic accidents that

involved drunk drivers for the given year.

1. What is the median number of deaths for the given years?

2. What is the IQR of the death data?

3. What is the mean number of deaths?

4. What is the standard deviation of the death data?

5. What is the z-score for the number of deaths in 1993?

Mathematics1 month ago
• ### Based on the summary statistics, which of the following gives the best comparison of the range and the interquartile range of the two days?

The following table shows summary statistics for the number of hours a group of students spent playing video games last Monday and last Saturday.

Based on the summary statistics, which of the following gives the best comparison of the range and the interquartile range (IQR) of the two days?

A. The range and IQR of hours played on Monday are both greater than the range and IQR of hours played on Saturday.

B. The range and IQR of hours played on Monday are both less than the range and IQR of hours played on Saturday.

C. The range and IQR of hours played on Monday are both equal to the range and IQR of hours played on Saturday.

D. The range of hours played on Monday is greater than the range of hours played on Saturday, and the IQR of hours played on Monday is less than the IQR of hours played on Saturday.

E. The range of hours played on Monday is less than the range of hours played on Saturday, and the IQR of hours played on Monday is greater than the IQR of hours played on Saturday.

Mathematics1 month ago
• ### Based on the boxplots, which of the following statistics is the same for both leagues?

One statistic calculated for pitchers in baseball is called the earned run average, or ERA. The following boxplots summarize the ERA for pitchers in two leagues, A and B.

Based on the boxplots, which of the following statistics is the same for both leagues?

A. The range

B. The interquartile range

C. The median

D. The minimum

E. The maximum

Mathematics1 month ago
• ### Based on the histograms, which of the following correctly compares the two distributions?

One way to measure the duration of subterranean disturbances such as earthquakes and mining is to calculate the root-mean-square time. The following histograms summarize the distributions of the root-mean-square times for two sources of disturbances.

Based on the histograms, which of the following correctly compares the two distributions?

A. The median of the earthquake disturbances is equal to the median of the mining disturbances.

B. The median of the earthquake disturbances is less than the median of the mining disturbances.

C. The range of the earthquake disturbances is equal to the range of the mining disturbances.

D. The range of the earthquake disturbances is less than the range of the mining disturbances.

E. The mode of the earthquake disturbances is equal to the mode of the mining disturbances.

1 AnswerMathematics1 month ago
• ### Which of the following is closest to the proportion of orders that are processed in less than 240 seconds?

At a small coffee shop, the distribution of the number of seconds it takes for a cashier to process an order is approximately normal with mean 276 seconds and standard deviation 38 seconds. Which of the following is closest to the proportion of orders that are processed in less than 240 seconds?

A. 0.17

B. 0.25

C. 0.36

D. 0.83

E. 0.95

1 AnswerMathematics1 month ago
• ### Which of the following is closest to the proportion of field mice with a weight greater than 33 grams?

A researcher is studying a group of field mice. The distribution of the weight of field mice is approximately normal with mean 25 grams and standard deviation 4 grams. Which of the following is closest to the proportion of field mice with a weight greater than 33 grams?

A. 0.023

B. 0.046

C. 0.954

D. 0.977

E. 1.000

2 AnswersMathematics1 month ago
• ### Good IB HL History IA Topics/Questions?

I'm trying to think of some good History IA topics or questions but I can't seem to find anything that's interesting enough or something I'd want to do. Does anyone have examples of topics they think are interesting and able to be analyzed in an IA?

Rubric:

-Can't be a topic from the last ten years

-Must be detailed while still having a range of opinions about the topic

-Must have a lot of information available to write a 2200-word paper.

Respond to this question if you have any ideas, thanks!

Homework Help8 months ago
• ### need help with sequences and series question!?

Calculate the value of S20 for each series.

log(a) + log(a^2) + log(a^4) + log(a^8)...

I just need help with finding the sum of the first 20 terms of this sequence, I can't seem to figure this one out. Thanks!

3 AnswersMathematics8 months ago
• ### compound interest question?

Jane takes out a loan for \$3000. The nominal annual interest rate is 20%.

a. How much does she owe after 5 years if the interest is compounded annually? Give your answer to the nearest whole number.

b. How much does she owe after 5 years if the interest is compounded quarterly?

1 AnswerMathematics9 months ago
• ### help with interest problem?

A starting salary for a teacher is \$25,000 and there is an annual increase of 3%.

a. How much will the teacher earn in their 10th year?

b. How much will the teacher earn in total during a 35-year teaching career?

c. Find the first year in which the teacher earns more than \$35,000.

d. How many years would the teacher have to work in order to earn a total of \$1 million?

3 AnswersMathematics9 months ago
• ### can someone help with this compound interest question?

Jane takes out a loan for \$3000. The nominal annual interest rate is 20%.

a. How much does she owe after 5 years if the interest is compounded annually? Give your answer to the nearest whole number.

b. How much does she owe after 5 years if the interest is compounded quarterly?

2 AnswersMathematics9 months ago
• ### Can someone answer this arithmetic series question pls?

2) A sequence is defined by un=(71-7n)/2

a) Prove that the sequence is arithmetic.

b) Find u1 and d

c) find u75

d) For what values of n are the terms of the sequences less than -200?

2 AnswersMathematics9 months ago