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mario62 [17]
2 years ago
7

A toy manufacturer wants to see how long, on average, a new toy captures children's attention. he tests children selected at ran

dom and finds that their mean attention span is minutes with a standard deviation of minutes. if we assume that attention spans are normally distributed, find a confidence interval for the mean attention span of children playing with this new toy. then find the lower limit and upper limit of the confidence interval.
carry your intermediate computations to at least three decimal places. round your answers to one decimal place. (if necessary, consult a list of formulas.)

lower limit:

upper limit:
SAT
1 answer:
bearhunter [10]2 years ago
7 0

Answer: Lower CI=21-t(0.025, 16)*7/sqrt(17)=21-2.12*7/sqrt(17)=17.4

upper CI=21+t(0.025, 16)*7/sqrt(17)=21+2.12*7/sqrt(17)=24.6

Explanation: Because there both close and equal

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Which excerpt from the passage uses imagery to describe the scene? "But they woke at dawn as usual. . . Suddenly remembering the
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Answer:

They rolled in the dew, they cropped mouthfuls of the sweet summer grass, they kicked up clods of the black earth and snuffed its rich scent.”

Explanation:

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What changes in the parent-child relationship occur when infants become toddlers
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Toddlers are most likely to become more curious and would want to start wondering from your presence but nothing will change between you too just that he/she will start becoming more active but the real shins hip will change if the child is scared of you.

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3 years ago
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Which of the following represents a job done by an agricultural engineer?
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Agricultural engineers have a variety of tasks, including giving answers to agricultural-related difficulties, as well as the usage of structures and infrastructure.

<h3>What does an agricultural engineer do?</h3>

Agricultural engineering, commonly referred to as agricultural and biosystems engineering, is the study and application of engineering science and design concepts to agriculture.

An agricultural engineer is a professional engineer with a background in agriculture. Agricultural engineers develop and plan the engineering for an agricultural project, generally in collaboration with an agriculturist who is more knowledgeable in farming and agricultural science.

Thus, some of the jobs of agricultural engineers are, addressing concerns with power sources, machine efficiency, building, and facility utilization, pollution, and environmental challenges.

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Suppose that prolog facts are used to define the predicates mother(m, y) and father(f, x), which represent that m is the mother
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Prolog languages are logics that are used when creating programs that require artificial intelligence.

The prolog rule to define the predicate grandfather(x, y) is grandfather(X,Y) :- mother(M,Y), father(X,M); father(F,Y), father(X,F)

<h3>How to determine the prolog rule</h3>

From the question, we have the following definitions:

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  • father(f, x): f is the father of x

For x to be the grandfather of y, then either of the following definitions must be true

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Using the above highlights, the prolog rule would be

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