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selftest.H0.tck <- function(){
options(guiToolkit="tcltk")
w <- gwindow(title = "Null hypotheses")
size(w) <- c(700, 1000)
g <- ggroup(container=w, horizontal=FALSE, use.scrollwindow = TRUE)
# q1 <- gexpandgroup("Question 1", container=g)
# q2 <- gexpandgroup("Question 2", container=g, anchor=c(-1,1))
# q3 <- gexpandgroup("Question 3", container=g, anchor=c(-1,1))
# q4 <- gexpandgroup("Question 4", container=g, anchor=c(-1,1))
# q5 <- gexpandgroup("Question 5", container=g, anchor=c(-1,1))
# q6 <- gexpandgroup("Question 6", container=g, anchor=c(-1,1))
# visible(q1) <- FALSE
# visible(q2) <- FALSE
# visible(q3) <- FALSE
# visible(q4) <- FALSE
# visible(q5) <- FALSE
# visible(q6) <- FALSE
#
#------------- Question 1 -----------#
gp1 <- gframe(container = g, spacing = 2, pos = 0, horizontal = FALSE)
gp1.1 <- ggroup(container = gp1, spacing = 2, pos = 0, horizontal = TRUE)
q <- glabel("1) ", container = gp1.1, horizontal = TRUE)
font(q) <- list(weight = "bold")
qq <- glabel("I reject H\u2080 but H\u2080 is true. This is a...", container = gp1.1, horizontal = TRUE)
font(qq) <- list(family = "cambria", size = 11)
# addSpace(gp1, .5)
ans1 <- c("(a) Type I error.",
"(b) Type II error.",
"(c) Type III error.",
"(d) None of the above.")
f1 = function(h,....){
if(svalue(r1) == ans1[1]){
gmessage(msg="Correct")
}
if(svalue(r1) == ans1[2]){
gmessage(msg="Incorrect", icon = "error")
}
if(svalue(r1) == ans1[3]){
gmessage(msg="Incorrect", icon = "error")
}
if(svalue(r1) == ans1[4]){
gmessage(msg="Incorrect", icon = "error")
}
svalue(r1) <- character(0)
}
r1 <- gcheckboxgroup(ans1, container = gp1, checked = FALSE, where = "beginning", handler = f1)
#------------- Question 2 -----------#
gp2 <- gframe(container = g, spacing = 2, pos = 0, horizontal = FALSE)
gp2.1 <- ggroup(container = gp2, spacing = 2, pos = 0, horizontal = TRUE)
q <- glabel("2) ", container = gp2.1, horizontal = TRUE)
font(q) <- list(weight = "bold")
qq <- glabel("We suspect that a soil N treatment will increase mean plant biomass compared to a control. \nWhat would our alternative hypothesis be?", container = gp2.1, anchor = c(-1,1))
font(qq) <- list(family = "cambria", size = 11)
# addSpace(gp2, .5, horizontal=FALSE)
ans2 <- c("(a) \u03BCN < \u03BCControl.",
"(b) \u03BCN > \u03BCControl.",
"(c) \u03BCN = \u03BCControl.",
"(d) \u03BCN \u2260 \u03BCControl.")
f2 <- function(h,....){
if(svalue(r2) == ans2[1]){
gmessage(msg="Incorrect", icon = "error")
}
if(svalue(r2) == ans2[2]){
gmessage(msg="Correct")
}
if(svalue(r2)== ans2[3]){
gmessage(msg="Incorrect", icon = "error")
}
if(svalue(r2)== ans2[4]){
gmessage(msg="Incorrect", icon = "error")
}
svalue(r2) <- character(0)
}
r2 <- gcheckboxgroup(ans2, container = gp2, checked = FALSE, where = "beginning", handler = f2)
#------------- Question 3 -----------#
gp3 <- gframe(container = g, spacing = 2, pos = 0, horizontal = FALSE)
gp3.1 <- ggroup(container = gp3, spacing = 2, pos = 0, horizontal = TRUE)
q <- glabel("3) ", container = gp3.1, horizontal = TRUE)
font(q) <- list(weight = "bold")
qq <- glabel("Statistical power is...",
container = gp3.1, anchor = c(-1,1))
font(qq) <- list(family = "cambria", size = 11)
# addSpace(gp3, .5, horizontal=FALSE)
ans3 <- c("(a) 1 - the probability of type I error",
"(b) 1 - \u03B1\u00B2",
"(c) 1 - the probability of type II error",
"(d) 1/\u03B1")
f3 <- function(h,....){
if(svalue(r3) == ans3[1]){
gmessage(msg="Incorrect", icon = "error")
}
if(svalue(r3) == ans3[2]){
gmessage(msg="Incorrect", icon = "error")
}
if(svalue(r3) == ans3[3]){
gmessage(msg="Correct")
}
if(svalue(r3) == ans3[4]){
gmessage(msg="Incorrect", icon = "error")
}
svalue(r3) <- character(0)
}
r3 <- gcheckboxgroup(ans3, container = gp3, checked = FALSE, where = "beginning", handler = f3)
#------------- Question 4 -----------#
gp4 <- gframe(container = g, spacing = 2, pos = 0, horizontal = FALSE)
gp4.1 <- ggroup(container = gp4, spacing = 2, pos = 0, horizontal = TRUE)
q <- glabel("4) ", container = gp4.1, horizontal = TRUE)
font(q) <- list(weight = "bold")
qq <- glabel("(T or F) A P-value requires a null hypothesis.",
container = gp4.1, anchor = c(-1,1))
font(qq) <- list(family = "cambria", size = 11)
# addSpace(gp4, .5, horizontal=FALSE)
ans4 <- c("T",
"F")
f4 <- function(h,....){
if(svalue(r4) == ans4[1]){
gmessage(msg="Correct")
}
if(svalue(r4) == ans4[2]){
gmessage(msg="Incorrect", icon = "error")
}
svalue(r4) <- character(0)
}
r4 <- gcheckboxgroup(ans4, container = gp4, checked = FALSE, where = "beginning", handler = f4)
#------------- Question 5 -----------#
gp5 <- gframe(container = g, spacing = 2, pos = 0, horizontal = FALSE)
gp5.1 <- ggroup(container = gp5, spacing = 2, pos = 0, horizontal = TRUE)
q <- glabel("5) ", container = gp5.1, horizontal = TRUE)
font(q) <- list(weight = "bold")
qq <- glabel("A P-value is...",
container = gp5.1, anchor = c(-1,1))
font(qq) <- list(family = "cambria", size = 11)
# addSpace(gp5, .5, horizontal=FALSE)
ans5 <- c("(a) The probability that the null hypothesis is true.",
"(b) The probability that the null hypothesis is false.",
"(c) The probability that the alternative hypothesis is false.",
"(d) P(data|H\u2080)")
f5 <- function(h,....){
if(svalue(r5) == ans5[1]){
gmessage(msg="Incorrect", icon = "error")
}
if(svalue(r5) == ans5[2]){
gmessage(msg="Incorrect", icon = "error")
}
if(svalue(r5) == ans5[3]){
gmessage(msg="Incorrect", icon = "error")
}
if(svalue(r5) == ans5[4]){
gmessage(msg="Correct")
}
svalue(r5) <- character(0)
}
r5 <- gcheckboxgroup(ans5, container = gp5, checked = FALSE, where = "beginning", handler = f5)
#------------- Question 6 -----------#
gp6 <- gframe(container = g, spacing = 2, pos = 0, horizontal = FALSE)
gp6.1 <- ggroup(container = gp6, spacing = 2, pos = 0, horizontal = TRUE)
q <- glabel("6) ", container = gp6.1, horizontal = TRUE)
font(q) <- list(weight = "bold")
qq <- glabel("Which of the following constitute a criticism of H\u2080 hypothesis testing?",
container = gp6.1, anchor = c(-1,1))
font(qq) <- list(family = "cambria", size = 11)
# addSpace(gp6, .5, horizontal=FALSE)
ans6 <- c("(a) The sample space for the H\u2080 distribution may exceed what can be sampled.",
"(b) P-values represent P(data|H\u2080) not P(H\u2080|data).",
"(c) Evidence against H\u2080 may not imply evidence for the alternative.",
"(d) Significance levels (in significance testing) are arbitrary",
"(e) P-values are partially a function of sample size.",
"(f) All of the above.")
f6 <- function(h,....){
if(svalue(r6) == ans6[1]){
gmessage(msg="Partially correct", icon = "error")
}
if(svalue(r6) == ans6[2]){
gmessage(msg="Partially correct", icon = "error")
}
if(svalue(r6) == ans6[3]){
gmessage(msg="Partially correct", icon = "error")
}
if(svalue(r6) == ans6[4]){
gmessage(msg="Partially correct", icon = "error")
}
if(svalue(r6) == ans6[5]){
gmessage(msg="Partially correct", icon = "error")
}
if(svalue(r6) == ans6[6]){
gmessage(msg="Correct")
}
svalue(r6) <- character(0)
}
r6 <- gcheckboxgroup(ans6, container = gp6, checked = FALSE, where = "beginning", handler = f6)
}
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