A researcher wants to study different messaging platforms by collecting data on 40 individuals. Half of the individuals only use iMessage while the other half only use What's App. For the individuals who only used iMessage, they sent an average of 280 messages with a sample variance of 170 in the past week. For the individuals who only used What's App, they sent an average of 295 messages with a sample variance of 182 in the past week. Determine if there is a significant difference between the average messages sent between the two groups of individuals. Use a significance level of 1%. What is the null hypothesis? The iMessage group on average sent less messages than the What's App group. The iMessage group on average sent more messages than the What's App group. There is no difference in the average number of messages sent between the two groups. There is a difference in the average number of messages sent between the two groups.

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Use the following information to answer the question.
A researcher wants to study different messaging platforms by collecting
data on 40 individuals. Half of the individuals only use iMessage while the
other half only use What's App. For the individuals who only used
iMessage, they sent an average of 280 messages with a sample variance
of 170 in the past week. For the individuals who only used What's App,
they sent an average of 295 messages with a sample variance of 182 in
the past week. Determine if there is a significant difference between the
average messages sent between the two groups of individuals. Use a
significance level of 1%.
What is the null hypothesis?
The iMessage group on average sent less messages than the What's App group.
The iMessage group on average sent more messages than the What's App
group.
There is no difference in the average number of messages sent between the
two groups.
There is a difference in the average number of messages sent between the two
groups.
Transcribed Image Text:Use the following information to answer the question. A researcher wants to study different messaging platforms by collecting data on 40 individuals. Half of the individuals only use iMessage while the other half only use What's App. For the individuals who only used iMessage, they sent an average of 280 messages with a sample variance of 170 in the past week. For the individuals who only used What's App, they sent an average of 295 messages with a sample variance of 182 in the past week. Determine if there is a significant difference between the average messages sent between the two groups of individuals. Use a significance level of 1%. What is the null hypothesis? The iMessage group on average sent less messages than the What's App group. The iMessage group on average sent more messages than the What's App group. There is no difference in the average number of messages sent between the two groups. There is a difference in the average number of messages sent between the two groups.
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