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Drupady [299]
3 years ago
12

Suppose the test scores of students in a class are normally distributed with a mean of 92 and a standard deviation of 3.

Mathematics
1 answer:
vaieri [72.5K]3 years ago
5 0
-2 since 86-92/3 = -6/3 which is -2
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Plz hurry will mark brainiest
aliya0001 [1]

Answer:

B. 4

Step-by-step explanation:

The sign \geq means greater than or equal to

The sign > just means greater than

4 is a solution for x \geq4, because 4 is equal to 4, but not a solution for x>4, because 4 is not greater than 4

Hope this helps! :)

6 0
3 years ago
Consider the following statements:
Black_prince [1.1K]

Answer:

b. I and II are both false.

Step-by-step explanation:

I. For a significance level, the two tailed hypothesis is not always accurate than the one tailed hypothesis test. The hypothesis testing is carried to find out the correctness of a claim of a population parameter. The two tail hypothesis test which used both positive and negative tails of the distribution is not always more accurate than one tailed test.

II. The process of the point estimation involves the utilization of the values of a statistic which is obtained from the sample data to obtain the best estimate of a corresponding unknown parameter in the given population.

Hence, both the statements are false.

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3 years ago
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mariarad [96]

Answer:

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Step-by-step explanation:

6 0
3 years ago
El equipo de corredores de la escuela organizo una carrera de 20 kilometros para ello deberan corre un circulito de 1000 metros.
julsineya [31]

Answer:

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3 0
2 years ago
What are the zeros in the function
Schach [20]
f(x)=x^3+x^2-6x\\\\text{The zeros:}\\\\f(x)=0\to x^3+x^2-6x=0\\\\x(x^2+x-6)=0\\\\x(x^2+3x-2x-6)=0\\\\x[x(x+3)-2(x+3)]=0\\\\x(x+3)(x-2)=0\iff x=0\ \vee\ x+3=0\ \vee\ x-2=0\\\\x=0\ \vee\ x=-3\ \vee\ x=2

Answer: -3; 0 and 2

6 0
3 years ago
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