What evidence do scientists have that erosion works slowly over long periods of time?

1 answer:

4 0

A noticeable evidence is that the Amazon was formed as a result of wearing away that has occurred over millions of years. Another good example is the Grand Canyon in the United States of America, it was formed as a result of erosion that occurred over 3 million years.

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B,D and F please thx

leonid [27]

Top is 5 the middle is 10 the bottom is 6

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3 years ago

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Degree is defined as number of incidents to vertex. Select one: True False

alexandr402 [8]

Answer:

The answer is : True

Step-by-step explanation:

In graph theory, the degree of a vertex of a graph is the number of edges that are incident on the vertex, and in a multigraph, loops are counted twice.

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3 years ago

A researcher is interested in finding a 95% confidence interval for the mean number of times per day that college students text.

Oxana [17]

Complete Question

A researcher is interested in finding a 95% confidence interval for the mean number of times per day that college students text. The study included 210 students who averaged 28 texts per day. The standard deviation was 21 texts.

Round your answers to two decimal places.

A. The sampling distribution follows a [ Select ] ["F", "normal", "T", "Chi-square"] distribution.

B. With 95% confidence the population mean number of texts per day of is between [ Select ] ["24.92", "25.79", "27.37", "25.14"] and [ Select ] ["31.19", "31.20", "29.28", "30.86"] texts.

C. If many groups of 210 randomly selected students are studied, then a different confidence interval would be produced from each group. About [ Select ] ["5", "95", "1", "99"] percent of these confidence intervals will contain the true population mean number of texts per day and about [ Select ] ["95", "99", "5", "1"] percent will not contain the true population mean number of texts per day.

Answer:

a. With 95% confidence the population mean number of texts per day is between $I = 21.06$ and $I = 30.33$ texts.

If many groups of 132 randomly selected members are studied, then a different confidence interval would be produced from each group. About 95% percent of these confidence intervals will contain the true population number of texts per day and about 5% percent will not contain the true population mean number of texts per day.

Step-by-step explanation:

From the question we are told that

The sample size is $n = 102$