Group A 8.2 10.5 9 | 13.5 Group B | 12 | 9.5 11 | 10.5 | 11.5 12.5 13 12 10 12 11
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
![Researchers wished to know if they could conclude that two populations of infants (Groups A, B) differed with respect to the mean age at which they first walked alone. A random sample of 7 infants
from group A and 8 infants from group B gave the following data (ages in months).
Group A 8.2 10.5
Group B 12
13.5
9.5 11 10.5 11.5 12.5 13 12
10
12
11
Using a suitable hypothesis test, investigate at the 5% significance level to decide whether the mean age at which the infants first walked alone is different for the two groups.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F54786553-258b-4803-9806-e0cb5399daf4%2F68e88e5c-1fe9-4ae4-992c-b5ec723b1b2f%2F04spkm_processed.png&w=3840&q=75)
![do not reject mean confidence is significance is not reject median
Drag-and-drop from the options above to complete the conclusion of the test:
At 5%
level we
the null hypothesis and conclude that there
a significant difference in the
age at which infants walked alone
between the two populations.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F54786553-258b-4803-9806-e0cb5399daf4%2F68e88e5c-1fe9-4ae4-992c-b5ec723b1b2f%2Fz1umlna_processed.png&w=3840&q=75)
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