The average consumer unit spent $1749 on apparel and services in 2012. That same year, 25 consumer units in the Northwest had the following annual expenditures, in dollars, on apparel and services. 1292 1470 2033 1695 1286 2236 2246 2205 1624 1747 2701 2042 2179 1873 2457 1857 1778 2280 1535 2025 2003 1764 2126 2215 1725 At the 5% significance level, do the data provide sufficient evidence to conclude that the 2012 mean annual expenditure on apparel and services for consumer units in the Northwest differed from the national mean of $1749? ( Note: x = $1935.76 and s = $350.90)
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.
10) The average consumer unit spent $1749 on apparel and services in 2012. That same year, 25 consumer units in the Northwest had the following annual expenditures, in dollars, on apparel and services.
1292 1470 2033 1695 1286
2236 2246 2205 1624 1747
2701 2042 2179 1873 2457
1857 1778 2280 1535 2025
2003 1764 2126 2215 1725
At the 5% significance level, do the data provide sufficient evidence to conclude that the 2012 mean annual expenditure on apparel and services for consumer units in the Northwest differed from the national mean of $1749? ( Note: x = $1935.76 and s = $350.90)
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