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erin barton

erin b.

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Collect the data: A random sample of 215 adults is selected from the 2000 Census. The mean commute time is 25.7 minutes with a standard deviation of 21.78 minutes. Here is a histogram of the data. • The sample mean of 25.7-minutes from the year 2000 is obviously very close to the 25-minute commute time in 2015. Why do we need to do a hypothesis test? Can’t we just say that there is no statistically significant difference in the commute time in the years 2000 and 2015? Assess the data: • The skew in this data suggests that the distribution of commute times in the population in the year 2000 is also skewed. Verify that we can use a T-curve to model the distribution of sample means despite the likely skew in the population’s commute times. Your answer • Calculate the T-score. t = • Your answer • • • • • Use the StatCrunch T-calculator to find the P-value. Note that the T-calculator requires you to calculate and enter degrees of freedom and a T-score. What is the P-value for this test? Your answer Since we are performing a two-sided test we will multiply the P-value by 2: How does it compare with the StatCrunch print- out? Your answer Shade the entire P-value in the T-model. State a conclusion: Reject/Fail to reject the null hypothesis. Your answer

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These cells are involved in providing physical support and structure for neurons, helping them stay organized and function properly along with delivering nutrients to neurons and remove waste products. Question 24 options: Myelin Rosehip neurons Mitochondria Glial cells

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For RAD and DSED: Interpersonal skills are significantly impacted, including BLANK and BLANK later in life

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Assume that the long-run aggregate supply curve is vertical at Y = 3,000, while the short-run aggregate supply curve is horizontal at P = 1.0. The aggregate demand curve is Y = 3 \times M/P, and M = 1,000. If the economy is initially in long-run equilibrium, what are the values of P and Y? P = 1.0; Y = 4,000 P = 1.0; Y = 3,000 P = 2.0; Y = 3,000 P = 3.0; Y = 4,000

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What are the three most popular subcategories of nonfiction book that nathan has read? SQL statement?

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Suppose aggregate demand shifted to the left, decreasing the price level, but having no effect on the real gross domestic product. It must mean that the economy is operating within what segment of the aggregate supply curve? Price Level OA OC C and B OB Real GDP B A SRAS

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12 1 point Dr. Ly was driving in the dark and she was making a turn. She was very focused on tracking bicyclists going across the road - she didn't want to hit them. After the bicyclists passed, she went to make her turn and didn't realize that a car was driving next to the bicyclists and almost hit it! Dr. Ly didn't see that car at all! Which type of "blindness" does this situation best represent? Change blindness Inattentional blindness Previous Next

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Late night call: You get a late-night call from a friend in Southeast Asia. You can barely hear what he's saying given the loud music. He says he's using your music from 3XT2 since it helps productivity. But, he wants to know if he texts you the following info: Automated Manufacturing Line: auto-feed machine has an initial cost of 220,685,000 IDR or roughly $23,000 USD, estimated salvage value of 38,380,000 IDR or $4,000, predicted life of 10 years, 10 people to operate at an average wage of $1 per hour, 8 tons per hour of produced output, Annual maintenance and operating (O&M) costs are expected to be $3,500. Manual Driven Line: first cost of $8,000, no salvage value, 5-year life, output of 6 tons per hour of product, 20 people to operate at an average wage of $0.6 per hour, O&M of $1,500 per year. I evaluate projects at 10% per year. I anticipate producing just short of 1,000 tons per year. 13. You text back that he should choose the [Auto or Manual] option. 14. Because the breakeven point between the options is roughly [tons produced per year].

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CH 13 HW Weir Gravitational Force of Three Identical Masses Three identical very dense masses of 4800 kg each are placed on the x axis. One mass is at $x_1 = -110$ cm, one is at the origin, and one is at $x_2 = 380$ cm Part A What is the magnitude of the net gravitational force $F_{grav}$ on the mass at the origin due to the other two masses? Take the gravitational constant to be $G = 6.67 \times 10^{-11} \text{ N} \cdot \text{m}^2/\text{kg}^2$. Express your answer in newtons to three significant figures. $F_{grav} = \text{ _______ N}$ Part B What is the direction of the net gravitational force on the mass at the origin due to the other two masses?

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Using Von-Mises criterion theory, determine the value of yield with the given data. The yield stress at the x-axis is 250 MPa and the shearing stress is 62 MPa. a. 230.5 MPa b. 242.5 MPa c. 253.5 MPa d. 264.5 MPa Using Tresca criterion method, determine the maximum shearing stress with the given data. The stress at the y-axis is 140 MPa and at the x-axis is 140 MPa. a. 100 MPa b. 110 MPa c. 120 MPa d. 130 MPa In Mohr's criterion analysis, the value of Mohr that does not rupture is: a. 0.1 b. 0.3 c. 0.9 d. 1.1 None of the below is a criterion or theory of failure for ductile materials: a. Maximum shear stress analysis b. Maximum criterion energy analysis c. Euler analysis None of the below is a criterion or theory of failure for brittle materials: a. Lame analysis b. Rankine analysis c. Mohr's analysis

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