tions #47 - 52. ing a new curriculum. A control group of third g for the two groups is shown in the back-to-back port the claim that the new method of teaching es? Assume the population variances are equal. populations are normally distributed. 4, 55, 56, 56, 59, 61, 62, 64, 64, 65, 66, 66, 69
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.
question 47 and 48
![Use the information below to answer Questions #47 - 52.
A group of third grade students is taught using a new curriculum. A control group of third grade students is taught using
the old curriculum. The reading test scores for the two groups is shown in the back-to-back stem-and-leaf plot below. At
a = 0.01, is there enough evidence to support the claim that the new method of teaching reading produces higher
reading test scores than the old method does? Assume the population variances are equal. Assume the samples are
random and independent, and assume the populations are normally distributed.
Old Curriculum: 30, 48, 49, 50, 51, 52, 54, 55, 56, 56, 59, 61, 62, 64, 64, 65, 66, 66, 69
New Curriculum: 41, 56, 57, 61, 62, 63, 64, 64, 65, 66, 66, 66, 67, 67, 69, 70, 70, 71, 72, 74, 75, 77, 78, 84, 88
What is the claim? Choose the correct answer below.
The new method of teaching reading produces lower test scores than the old method.
The new method of teaching reading produces the higher test scores than the old method.
O The new method of teaching reading produces equal test scores than the old method.
O The new method of teaching reading produces different test scores than the old method.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F91858394-205e-44b4-ad82-4ff70844e3f2%2Ff92ea979-788e-4a16-9a59-5bf7227ecb49%2F358rkg_processed.png&w=3840&q=75)
![Use the information below to answer Questions #47 - 52.
A group of third grade students is taught using a new curriculum. A control group of third grade students is taught using
the old curriculum. The reading test scores for the two groups is shown in the back-to-back stem-and-leaf plot below. At
a = 0.01, is there enough evidence to support the claim that the new method of teaching reading produces higher
reading test scores than the old method does? Assume the population variances are equal. Assume the samples are
random and independent, and assume the populations are normally distributed.
Old Curriculum: 30, 48, 49, 50, 51, 52, 54, 55, 56, 56, 59, 61, 62, 64, 64, 65, 66, 66, 69
New Curriculum: 41, 56, 57, 61, 62, 63, 64, 64, 65, 66, 66, 66, 67, 67, 69, 70, 70, 71, 72, 74, 75, 77, 78, 84, 88
Write the claim mathematically and identify the null and the alternative hypotheses. Assume that i represents the mean
of the test scores of those taught with the old curriculum and uarepresents the mean of the test scores of those taught
with the new curriculum. Choose the correct answer below.
O Ho: H1 < M2
Ha: l1 > µ2 (claim)
O Ho: H1 = µ2 (claim)
Ο H μι > μ2
Hạ: Hi < µ2 (claim)
O Ho: 41 + 42
Ha: 41 = µ2 (claim)
O Ho: 41 < 42
Ha: H1 2 42 (claim)
Ho: 41 > 42
Hạ: 41 < µ2 (claim)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F91858394-205e-44b4-ad82-4ff70844e3f2%2Ff92ea979-788e-4a16-9a59-5bf7227ecb49%2F7xrrb8_processed.png&w=3840&q=75)
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