Table 1(a) shows the marks obtained by 40 students in an examination
Jadual 1(a) menunjukkan markah yang diperolehi oleh 40 orang pelajar
dalam suatu peperiksaan
Table 1(a) / Jadual l(a)
62 54 38 33 80 66 56 60 68 52
57 7 85 47 50 7 52 76 49 69
48 68 55 49 79 41 61 65 75 81
64 58 66 59 52 43 65 48 41 56
Construct a frequency distribution table with a class width (class size)
of 10 marks with the first class being 30-39.
Bina sebuah jadual taburan kekerapan dengan menggunakan lebar
kelas (saiz kelas) 10 dengan permulaan kelas 30-39
[3 marks]
[3 markah]
Calculate the mean.
Kirakan min
X = 59
(5 marks)
15 markah)
Calculate the standard deviation for the data
Kirakan sisihan piawai bagi data tersebut
3 = 164 75
& - 12.84
17 marks)
17 markah)
Please help me the calculation

( ∃x ∈ Q) ( x > √2)

There exists a rational number x such that x > √2.

( ∀x ∈ Q) ( ( x ≤ √2)

For each rational number x, x ≤ √2.

(b)

(∀x ∈ Q)(x² - 2 ≠ 0).

For all rational numbers x, x² - 2 ≠ 0

( ∃x ∈ Q ) ( x² - 2 = 0 )

There exists a rational number x such that x² - 2 = 0

(c)

(∀x ∈ Z)(x is even or x is odd).

For each integer x, x is even or x is odd.

( ∃x ∈ Z ) (x is odd and x is even)

There exists an integer x such that x is odd and x is even.

(d)

( ∃x ∈ Q) ( √2 < x < √3 )

There exists a rational number x such that √2 < x < √3

(∀x ∈ Q) ( x ≤ √2 or x ≥ √3 )

For all rational numbers x, x ≤ √2 or x ≥ √3.

answer:

science is the study of the nature and behavior of natural things and the knowledge that we obtain about them. a science is a particular branch of science such as physics, chemistry, or biology. physics is the best example of a science which has developed strong, abstract theories.

pseudoscience is a collection of beliefs or practices mistakenly regarded as being based on scientific method.

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answer:

the fed will purchase bonds from banks to inject money into the banking system. the banks can use these funds to provide loans to individuals and businesses.

explanation: