Question 11 MarkIf the value of $z-$ score for $x=174$ is $1.2$, find the mean of the variable.Answerસ્વપ્રયત્નView full question & answer→
Question 21 MarkThe standard deviation of a normal variable $X$ is $20 .$Answerસ્વપ્રયત્નView full question & answer→
Question 31 MarkFind the area under the normal curve to the left of a perpendicular at $z=1.75$ for a standard normal variable.Answerસ્વપ્રયત્નView full question & answer→
Question 41 MarkThe mean of normal variable is $125$ and the standard deviation is $17.$ Obtain the range of central $99 \%$ observations of this variable.Answerસ્વપ્રયત્નView full question & answer→
Question 51 MarkWhat percentage of observations of a normal variable are less than $\mu+1.96 \sigma$ ?Answerસ્વપ્રયત્નView full question & answer→
Question 61 MarkIf the sum of two extreme quartiles is $18 ,$ find its mean.Answerસ્વપ્રયત્નView full question & answer→
Question 71 MarkThe median of a normal variable is $44.5$. If the value of its first quartile is $26.3$, find the value of its third quartile.Answerસ્વપ્રયત્નView full question & answer→
Question 81 MarkIf the value of quartile deviation of a normal variable is $5 ,$ find the approximate value of its standard deviation.Answerસ્વપ્રયત્નView full question & answer→
Question 91 MarkState the value of quartiles for the standard normal variable.Answerસ્વપ્રયત્નView full question & answer→
Question 101 MarkState the median of the standard normal variable.Answerસ્વપ્રયત્નView full question & answer→
Question 111 MarkFor which value of $X$ will the function $f(x)$ of a normal distribution $N\left(\mu, \sigma^2\right)$ have maximum value ?Answerસ્વપ્રયત્નView full question & answer→
Question 121 MarkState the formula to convert a normal variable with parameters $\mu$ and $\sigma$ to the standard normal variable.Answerસ્વપ્રયત્નView full question & answer→
Question 131 MarkWrite the probability mass function of a variable following normal distribution $N(100,16)$.Answerસ્વપ્રયત્નView full question & answer→
Question 141 MarkThe probability mass function of a normal variable $X$ is as follows : $ f(x)=\frac{1}{7 \sqrt{2 \pi}} e^{\frac{(x-35)^2}{98}} $ State the parameters of the distribution.Answerસ્વપ્રયત્નView full question & answer→