Kelsi is curious to see if ST 243Z campus students typically got their first cell phone at a younger age than they (Kelsi) got their first phone. To investigate this, they take a random sample of 20 students from all ST 243Z campus students this Winter 2024 term and find those students had an average age of 11.85 years when they reported receiving their first phone. The standard deviation of the population, ox, is known to be 1.91 years. The histogram and boxplot of the sample are provided below. We are interested at exploring at the 90% confidence level. What is the average age for getting their first phone of all ST 243Z campus students in Winter 2024? 8 9 Age when got first phone 10 11 12 Age (years) 13 14 15 8 9 Age when got first phone T 10 11 12 Age (years) T 13 T 14 T 15 1. In 1-3 sentences, describe the distribution of the sample, including shape, center, spread, context, and outliers (if relevant).
Kelsi is curious to see if ST 243Z campus students typically got their first cell phone at a younger age than they (Kelsi) got their first phone. To investigate this, they take a random sample of 20 students from all ST 243Z campus students this Winter 2024 term and find those students had an average age of 11.85 years when they reported receiving their first phone. The standard deviation of the population, ox, is known to be 1.91 years. The histogram and boxplot of the sample are provided below. We are interested at exploring at the 90% confidence level. What is the average age for getting their first phone of all ST 243Z campus students in Winter 2024? 8 9 Age when got first phone 10 11 12 Age (years) 13 14 15 8 9 Age when got first phone T 10 11 12 Age (years) T 13 T 14 T 15 1. In 1-3 sentences, describe the distribution of the sample, including shape, center, spread, context, and outliers (if relevant).
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
![Kelsi is curious to see if ST 243Z campus students typically got their first cell phone at a younger age than they (Kelsi) got
their first phone. To investigate this, they take a random sample of 20 students from all ST 243Z campus students this
Winter 2024 term and find those students had an average age of 11.85 years when they reported receiving their first
phone. The standard deviation of the population, ox, is known to be 1.91 years. The histogram and boxplot of the
sample are provided below. We are interested at exploring at the 90% confidence level. What is the average age for
getting their first phone of all ST 243Z campus students in Winter 2024?
8
9
Age when got first phone
10
11
12
Age (years)
13
14
15
8
9
Age when got first phone
T
10
11
12
Age (years)
T
13
T
14
T
15
1. In 1-3 sentences, describe the distribution of the sample, including shape, center, spread, context, and outliers
(if relevant).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F277ae00b-d056-42ed-a729-386f4fca5973%2Fed07728e-7916-469a-b6bf-ef3da6a8b274%2Fjynukvg_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Kelsi is curious to see if ST 243Z campus students typically got their first cell phone at a younger age than they (Kelsi) got
their first phone. To investigate this, they take a random sample of 20 students from all ST 243Z campus students this
Winter 2024 term and find those students had an average age of 11.85 years when they reported receiving their first
phone. The standard deviation of the population, ox, is known to be 1.91 years. The histogram and boxplot of the
sample are provided below. We are interested at exploring at the 90% confidence level. What is the average age for
getting their first phone of all ST 243Z campus students in Winter 2024?
8
9
Age when got first phone
10
11
12
Age (years)
13
14
15
8
9
Age when got first phone
T
10
11
12
Age (years)
T
13
T
14
T
15
1. In 1-3 sentences, describe the distribution of the sample, including shape, center, spread, context, and outliers
(if relevant).
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Follow-up Question
![6. Kelsi got their first phone at 14 years old and believes that's the average age that all ST 243Z students this term
got their first phone, too. Based on our confidence interval, what do we believe about the claim that all ST 243Z
campus students this Winter 2024 term were 14 years old, on average, when they got their first phone?
O We agree that the average age of all ST 243Z getting their first phone was definitely 14 years old
O We think that the average age of all ST 243Z getting their first phone could be 14 years old
O We disagree that the average age of all ST 243Z getting their first phone was 14 years old](https://content.bartleby.com/qna-images/question/277ae00b-d056-42ed-a729-386f4fca5973/fb85e381-99c4-4017-ad91-a1f9107d50c2/z2xmoi8_thumbnail.jpeg)
Transcribed Image Text:6. Kelsi got their first phone at 14 years old and believes that's the average age that all ST 243Z students this term
got their first phone, too. Based on our confidence interval, what do we believe about the claim that all ST 243Z
campus students this Winter 2024 term were 14 years old, on average, when they got their first phone?
O We agree that the average age of all ST 243Z getting their first phone was definitely 14 years old
O We think that the average age of all ST 243Z getting their first phone could be 14 years old
O We disagree that the average age of all ST 243Z getting their first phone was 14 years old
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