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What type of volcano is most likely to affect climate?

a. Stratovolcano

b. Cinder cone

c. Shield volcano

d. Basaltic fissure eruption

What type of eruption is most likely to affect climate?

a. Ash column that reaches the stratosphere

b. Felsic lava flows

c. Basaltic lava flow

d. Underwater eruption of any sort

e. Pyroclastic flow

Where does cotx=-(√3/3)) withinin [-2π ,2π )

sin^4x+cos^4x=1-2 cos^2x+2 cos^4x

Thank you!

Most igneous rocks never reach the surface. However, igneous rocks other than those formed in volcanoes are found exposed on many parts of Earth. How do you account for this phenomenon?

a They formed at depth and have been exposed by uplift and erosion.

b They are composed of lava flows.

c They are the result of meteorite impact.

d They formed at the surface and sank due to their greater density.

e They have been glaciated.

Which igneous rock or magma has the lowest silica () content?

a. peridotite

b. basalt

c.andesite

d. granite

Which of the following statements regarding transform plate boundaries is not correct?

a. At transform plate boundaries, adjacent lithospheric plates slide past each other horizontally.

b. New oceanic crust is formed at transform plate boundaries.

c. Earthquakes are a common occurrence along transform plate boundaries.

d. Transform plate boundaries can occur within continental crust.

e. Transform plate boundaries connect two segments of the oceanic ridge system.

a sine curve with a period of 4π, an amplitude of 3, a left phase shift of π/4, and a vertical translation down 1 unit.

As oceanic crust is subducted, it melts, forming a body of magma. When this magma rises and interacts with the overlying continental crust, what change occurs in the composition of the magma?

The silica content of the magma increases.

The composition of the magma causes the density to increase.

The silica content of the magma decreases.

The composition of the magma causes it to produce mostly dark-colored minerals.

The composition of the magma causes it to produce only light-colored minerals.

1. The magnetic inclination is measured for two rocks with different ages at a single location on a continent:

(Assume that the rocks have always remained in the northern hemisphere)

Magnetic inclination of 60° for 400 Ma rocks

Magnetic inclination of 20° for 50 Ma rocks

What direction did the continent move between 400 and 50 Ma? Assume that the continent with the two rocks has moved along a line of longitude

a. Westward

b. Eastward

c. Southward

d. Northward

e. The continent has remained stationary between 400 and 50 Ma.

and

2.Assuming again that the continent with the two rocks has moved along a line of longitude, What was the average rate of motion between 400 Ma and 50 Ma?

(Lines of latitude are spaced at ~111 km.) (Use mm/year.)

a.0.15 mm/yr

b. 9.5 mm/yr

c. 0.82 mm/yr

d. 4.2 mm/yr

e. 0.01 mm/yr

f. 19.4 mm/yr

If secθ=-9/4 and is in quadrant 3, find tanθ in quadrant 3!

if cscθ=-2 in quadrant 4, what is cotθ in the same quadrant (quadrant 4)

What is:

(a) Cos (-t)

(b) sec (-t)

Graphite and diamond are both minerals made of only carbon atoms. However, the carbon atoms are arranged differently in the two minerals because diamond forms deep within the Earth at high pressures, whereas graphite forms at lower pressure. If equal volumes of graphite and diamond are compared, which mineral would you expect to have more carbon atoms within this volume?

According to a study by the Centers for Disease Control, the national mean hospital stay after childbirth is 2.1 days. Reviewing records at her own hospital, a hospital administrator calculates that the mean hospital stay for a random sample of 81 women after childbirth is 2.3 days with a standard deviation of 1.2 days.

Test the claim that the mean hospital stay after childbirth for this hospital is significantly longer than the national mean of 2.1 days.

complete the hypothesis test. Find the p-value.

A. 0.931

B. 0.069

C. 0.138

D. 0.164

A new medication has been created to treat osteo-arthritis inflammation and pain. Doctors prescribing the drug claim that the drug is not as effective for women as men since women taking the medication have higher pain levels than men. The pharmaceutical company conducts a clinical trial with 52 women and 47 men having osteo-arthritis in order to determine if women taking the drug have higher pain levels than men. After treatment, the 52 women have a mean pain level of 5.6 with a standard deviation of 1.2 while the 47 men have a mean pain level of 4.8 with a standard deviation of 1.5. Higher pain level measures indicate more inflammation and pain. Test the claim that women have higher pain levels than men when taking this drug to treat osteo-arthritis.

Use a 95% confidence interval for the mean difference between pain levels for women and for men.

FInd the upper and lower bound.

Randomly selected cans of Coke are measured for the amount of cola in ounces. The sample values listed below have a mean of 12.19 ounces and a standard deviation of 0.11 ounces.

Use a 99% confidence interval for the mean volume of Coke in cans. Show the lower bound AND upper bound. Round the results to two decimal places.

Randomly selected cans of Coke are measured for the amount of cola in ounces. The sample values listed below have a mean of 12.19 ounces and a standard deviation of 0.11 ounces.

Use a 99% confidence interval for the mean volume of Coke in cans. Show the lower bound and upper bound. Round the results to two decimal places.

In 1990, 5.8% of job applicants who were tested for drugs failed the test. A random sample of 1520 current job applicants results in 68 failures (based on data from the American Management Association). At the 0.01 level, test the claim that the failure rate has changed from the 1990 level.

Use a 99% confidence interval for the true proportion of of job applicants who were tested for drugs and failed the test. Find the lower bound. Show your results as percents correct to tenths of a percent.

In 1990, 5.8% of job applicants who were tested for drugs failed the test. A random sample of 1520 current job applicants results in 68 failures (based on data from the American Management Association). At the 0.01 level, test the claim that the failure rate has changed from the 1990 level.

There is a 99% confidence interval for the true proportion of of job applicants who were tested for drugs and failed the test. Find the upper bound and lower bound.

Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adult women by IBR Polls found that 65.5% of adult women favored stricter gun laws.

create a 90% confidence interval for the true proportion of adult women who favored stricter gun laws. Find the Lower bound, and then the Upper bound.