Numerade

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95% confidence interval for a difference in means 4, - 2 if the samples have n, = 100 with 7, = 271 and s, = 56 an = 120 with 72 = 238 and s2 = 49, and the standard error is SE = 7.17.

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Question 14 (1.33 points) What type of organism uses bacteriochlorophylls as a source of energy, but uses an organic substance as a carbon source? A) chemoheterotroph B) chemoautotroph C) photoheterotroph D) photoautotroph

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QUESTION 31 When deciding whether to "make-or-buy" a product, the manufacturer should not consider ________ and only include the relevant absorption cost per unit, fixed costs. variable costs per unit, absorption cost per unit. absorption cost per unit, variable costs. fixed costs per unit, variable costs per unit.

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When forming close friendships in supervision, which ethical challenge may arise? Increased performance Heightened trust Conflicts of interest and perceived favoritism More efficient communication

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Bronfenbrenner's ecological theory is comprehensive in examining the layers of influence on the development of a young child is only concerned with the home and parental relationship and its effect on the young child's life considers that the assessment conducted in the child's familiar home is not valid recognizes that the father's role is not as influential for some children as the mother's

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QUESTION 22 Cognitive deficits in schizophrenia ________. ? tend to be rather short term ? are not present at the beginning of schizophrenic disorder ? are one of the earliest signs of schizophrenia ? can be diagnosed only through neuropsychological tests

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Write an expression for the sequence of operations described below. raise 7 to the 3rd power, then add $ r $ to the result Do not simplify any part of the expression. $ \square $

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2.21 RP-1 flows steadily through the 90° reducing elbow shown in the illustration. The absolute pressure at the inlet to the elbow is 107.3 kPa and the cross-sectional area is 0.01 m². The cross-sectional area at the outlet is 0.0025 m² and the velocity there is 16 m/s. The elbow discharges to the atmosphere. Find the velocity of the propellant entering the elbow and the force required to hold the elbow in place. Assume that the outside pressure is 101 kPa, the density of RP-1 is constant at 810 kg/m³, that the volume of the elbow is 1 l, and that gravity points in the -z direction. Neglect the weight of the elbow itself. $A_1 = 0.01 \text{ m}^2$ $p_1 = 220 \text{ kPa}$ $A_2 = 0.0025 \text{ m}^2$ $p_2 = 101 \text{ kPa}$

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Consider the recursive sequence $a_{n+1} = ((a_n)^2 + 6)$ with $a_1 = \frac{5}{2}$, $2 < a_n < 3$ and $n = 1, 2, 3, ...$ A. {$a_n$} is an increasing sequence that converges. B. {$a_n$} is a decreasing sequence that converges. C. {$a_n$} is an increasing sequence that diverges. D. None of the choices in this list. E. {$a_n$} is a decreasing sequence that diverges.

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$y = x^4 + 3x^2 - 5x + 1$

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kevin b.