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Discussion Assignment
Let f(x)=\sqrt(x) with f: \mathbb{R} \to \mathbb{R}. Discuss the properties of f. Is it injective, surjective, bijective, is it a function? Why or why not? Under what conditions change this?
Explain using examples.
Is this correct:2a²b-ab-a=ab(2a-1)-a
Suppose you are the marketing manager of a company, and the reports and records show a 10% decrease in sales compared to last year, and a decrease in market share by 5% compared to the total sales of competitors offering the same goods in the same market.
Apply the decision-making model with its sequential logical steps to this case, mentioning the details of each step in an accurate, scientific and practical manner, as in the ideal theoretical case for decision-making, and as it is also done in the actual reality?
Suppose you are the marketing manager of a company, and the reports and records show a 10% decrease in sales compared to last year, and a decrease in market share by 5% compared to the total sales of competitors offering the same goods in the same market.
Apply the decision-making model with its sequential logical steps to this case, mentioning the details of each step in an accurate, scientific and practical manner, as in the ideal theoretical case for decision-making, and as it is also done in the actual reality?
The management of Priority Health Club claims that its members lose
an average of 10 pounds or more within the first month after joining
the club. A consumer agency that wanted to check this claim took a
random sample of 36 members of this health club and
found that they
lost an average of 9.2 pounds within the first month of membership
with a population standard deviation of 2.4 pounds. Find the
p
–
value
for this test. What will you decision be if
α
=
.01?
if two dice are rolled one time, write the sample space and find the probability of getting these results.
(a) A sum of 6 or 10 or 11.
(b) The product of the two outcomes in an even number.
(c) A sum less than or equal to 7.
(d) Face 2 on any dice.
(e) Prime number on both the dice.
(f) Even number on first dice and odd number on second dice
Write down an equation to represent the production A, X, B, C
How many welders were studied? [1]
b. What is the class interval? [1]
c. About how many welders earn less than $10.00 per hour? [1]
d. About 75% of the welders make less than what amount? [1]
e. Ten of the welders studied made less than what amount? [1]
f. What percent of the welders make less than $20.00 per hour?
Determine the cost if labour amounts to 1245,with an equipment renting fee of R250,to produce 5 devices
The results of a nationwide aptitude test in mathematics are normally distributed with the mean=63 and standard deviation=5. What is the probability that students get the score in between 50 to 70?
