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Karli A

Karli A.

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Twenty different amino acids are found in the proteins of cells. What distinguishes these molecules?

Twenty different amino acids are found in the proteins of cells. What distinguishes these molecules?

Biological Science

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ANSWERED

Aishwarya Krishnakumar verified

Numerade educator

According to the muscle force-velocity relationship, if you performed a bench press, during which phase would you be able to produce the greatest forces in your arm muscles? A. Pushing the barbell up B. Lowering the barbell C. Both are likely to be the same

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Emily Anderson verified

Numerade educator

Which does not affect the flight time of a projectile? A. Initial horizontal velocity B. Initial vertical velocity C. Height of release D. Angle of release

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Aishwarya Krishnakumar verified

Numerade educator

During the flight of a gymnast’s vault (when the gymnast is not in contact with the vault or the ground), the gymnast goes into a tuck. Which of the following variables will not change? (assume no air resistance) A. Angular momentum B. Angular velocity C. Radius of gyration D. All above variables will change

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Aishwarya Krishnakumar verified

Numerade educator

When an impulse is applied to an object and its resulting velocity is in the opposite direction from the impulse, this means the momentum (magnitude) of the object is: A. Increased B. Decreased C. Constant

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Ivan Kochetkov verified

Numerade educator

550 N 20 N 30 N W = 500 N

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Ivan Kochetkov verified

Numerade educator

550 N 20 N 30 N W = 500 N

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Dave Kratz verified

Numerade educator

The hurdler’s right knee is flexed. This motion (knee flexion) generally occurs about what axis of rotation and in what movement plane? A. Transverse axis / Sagittal plane B. Anterior-posterior axis / Anterior-posterior plane C. Longitudinal axis / Transverse plane D. Anterior-posterior axis / Frontal plane The hurdler’s right hip is also mildly flexed. If you were to look at the hurdler in the frontal plane, you would see that to better clear the knee over the bar, the right hip is also: A. Adducted B. Abducted C. Internally rotated D. Pronated

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Sheryl Ezze verified

Numerade educator

A laptop company ThinClick claims to have the lightest laptop out on the market, the Litetop, with a reported weight of 2.0 lbs. A laptop review company wasn’t sure about this claim and thinks it is different, so they took a sample of 260 Litetop laptops and calculated a mean weight of 2.04 lbs. What is the parameter of interest? What are the null and alternative hypotheses? What are the conditions for one-sample t-procedures? Suppose that this study was a two-sided test using an α = 0.04 with the null and alternative hypotheses being H0: μ = 2 versus Ha: μ ≠ 2. A 96% confidence interval was calculated to be (1.99lbs, 2.05lbs). What should the conclusion be? Suppose that the p-value was calculated to be 0.07. How would you interpret the p-value in context?

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T. L. verified

Numerade educator

Two studies were done on the same set of data, where study A was a two-sided test and study B was a one-sided test. The p-value of the test corresponding to study A was found to be 0.040. What is the p-value for study B?

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T. L. verified

Numerade educator

Proceed to statistical inference. The CDC says that adults need at least 7 hours of sleep per night. Conduct a hypothesis test to see if the average amount of sleep BYU students get is different than 7 hours per night. Assuming that α = 0.01, what is the appropriate conclusion to make?

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