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polet [3.4K]
3 years ago
10

According to a Pew Research Center report from 2012, the average commute time to work in California is 27.5 minutes. To investig

ate whether the small city she lives in has a different average, a California high school student surveys 45 people she knows (her teachers, her parents, and their friends and co-workers) and finds the average commute time for this sample to be 24.33 minutes with a standard deviation of 9.53 minutes. The data are not too skewed. The null and alternative hypotheses of her study are: H0 : µ = 27.5 versus Ha : µ 6= 27.5
Required:
a. Identify the observational units for this study.
b. Identify the variable of interest and state whether it is categorical or quantitative.
c. Identify (in words and using an appropriate symbol) the parameter of interest
d. Use the 2SD approach to find a 95% confidence interval for the parameter.
e. Interpret the interval from part d. in context.
Mathematics
1 answer:
LenaWriter [7]3 years ago
7 0
The answer is maybe given if you please summarize the question some. Thanks!
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Info is on the picture
natali 33 [55]

Answer: C

Step-by-step explanation:

1 ml = 0.001 l

1 l = 1000 kl

6 0
4 years ago
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A swimming pool is circular with a 40-ft diameter. The depth is constant along east-westlines and increases linearly from 2 ft a
AnnZ [28]

Answer:

volume will be equal to 5,655 ft³

Step-by-step explanation:

diameter of swimming pool = 40 ft

depth increases from east-west lines is from 2 ft to 7 ft

so the average depth of the swimming pool can be calculated by

   D_{avg} = \frac{2+7}{2}

hence average depth comes out to be  4.5 m

volume of water in the pool will be equal to the volume of the pool

volume = \pi\times r^2 \times d_{avg}

            = \pi\times 20^2 \times 4.5

            = 5,654.86 ft³

volume will be equal to 5,655 ft³ approximately

6 0
4 years ago
Which of the following items is the most likely to have a weight of 5 ounces?
Sav [38]

Answer:

An ant

Step-by-step explanation:

We would do process of elimination so first you would see in an apple would weigh 5 oz and it weighs more so that means a cat and chair could not be it either since they are heavier than an apple so the only logical answer would an an ant.

8 0
3 years ago
Read 2 more answers
please help me figure out how to determine the range of the following graph (the line y=5 is a horizontal asymptote)
prisoha [69]

we are given the graph of the function and we are interested in finding the range of the function. Recall that the range of a graph is simply the set of values on the y axis, for which there is a point on the graph that has that y coordinate.

One easy way to spot this set, is by taking any point on the graph and then drawing a horizontal line. Wherever the line crosses the y axis, that point is included in the range.

From the graph, we can see that no part of the graph has values with y coordinate less than 5. That is, any number less than 5 in the y coordinate would indicate that there is no point on the graph at that "height". So every number less than 5 is excluded from the range.

We are also told that line y=5 is a horizontal asymptote. This means that despite the graph is really close to the line y=5 (and it keeps getting closer and closer as x increases), it never touches the line. This means that the point 5 is excluded from the range.

Finally, we can see that above the horizontal line y=5, if we draw a horizontal line on the graph, it will touch the y axis. This means that every number greater than 5 is part of the range. Then, the set of numbers that represent the range is

(5,\text{infinity)}

4 0
1 year ago
What are these least to grates<br> 1. 3.5<br> 2. 3.715<br> 3. 3.17<br> 4. 3.571<br> 5. 3.75
Ganezh [65]
3. 3.17
1. 3.5
4. 3.71
2. 3.715
5. 3.75
8 0
3 years ago
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